{"id":30958,"date":"2019-07-01T17:26:30","date_gmt":"2019-07-01T11:56:30","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=30958"},"modified":"2019-07-01T17:33:24","modified_gmt":"2019-07-01T12:03:24","slug":"time-and-work-questions-for-ibps-rrb-clerk","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/time-and-work-questions-for-ibps-rrb-clerk\/","title":{"rendered":"Time and Work Questions for IBPS RRB Clerk"},"content":{"rendered":"<h1><span style=\"text-decoration: underline;\">Time and Work Questions for IBPS RRB Clerk:<\/span><\/h1>\n<p>Download Top-20 IBPS RRB Clerk Data Interpretation Questions PDF. Data Interpretation questions based on asked questions in previous year exam papers very important for the IBPS RRB Assistant exam<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/5161\" target=\"_blank\" class=\"btn btn-danger  download\">Download Time and Work Questions for IBPS RRB Clerk<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/pay\/65r9i\" target=\"_blank\" class=\"btn btn-info \">35 IBPS RRB Clerk Mocks @ Rs. 149<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/pay\/679Nl\" target=\"_blank\" class=\"btn btn-primary \">70 IBPS RRB (PO + Clerk) Mocks @ Rs. 199<\/a><\/p>\n<p>Take a <a href=\"https:\/\/cracku.in\/ibps-rrb-clerk-mock-tests\" target=\"_blank\" rel=\"noopener\">free mock test for IBPS RRB Clerk<\/a><\/p>\n<p>Download <a href=\"https:\/\/cracku.in\/ibps-rrb-clerk-previous-papers\" target=\"_blank\" rel=\"noopener\">IBPS RRB Clerk Previous Papers PDF<\/a><\/p>\n<p><b>Question 1:\u00a0<\/b>The speed of a boat in still water is 12 kmph. If the speed of the stream is 4kmph. Find the time taken by boat to travel 480 km upstream.<\/p>\n<p>a)\u00a052 hr<\/p>\n<p>b)\u00a060 hr<\/p>\n<p>c)\u00a045 hr<\/p>\n<p>d)\u00a046 hr<\/p>\n<p>e)\u00a042 hr<\/p>\n<p><b>Question 2:\u00a0<\/b>A motor boat travels at a speed of 35 km\/hr in still water. How much time will it take to travel 40km upstream and 10 km downstream if the speed of water current is 5 km\/hr?<\/p>\n<p>a)\u00a01.33 hours<\/p>\n<p>b)\u00a01.66 hours<\/p>\n<p>c)\u00a01.58 hours<\/p>\n<p>d)\u00a01.4 hours<\/p>\n<p>e)\u00a0None of these<\/p>\n<p><b>Question 3:\u00a0<\/b>By driving at 40 km\/hr, Ajay reaches his office 10 minutes late. If he drives at 50 km\/hr, he reaches his office 2 minutes early. At what speed (in km\/hr) should he drive, so that he reaches his office just in time?<\/p>\n<p>a)\u00a043.33<\/p>\n<p>b)\u00a046.67<\/p>\n<p>c)\u00a048<\/p>\n<p>d)\u00a047.33<\/p>\n<p>e)\u00a0none of these<\/p>\n<p><b>Question 4:\u00a0<\/b>Amar starts from P to Q in his bike at 70 km\/hr and Roshan starts from Q to P at 50 km\/hr. If the distance between P and Q is 120km, what is the time required by Rohan to reach P after meeting Amar?<\/p>\n<p>a)\u00a01 hr 40 minutes<\/p>\n<p>b)\u00a01 hr 24 minutes<\/p>\n<p>c)\u00a050 minutes<\/p>\n<p>d)\u00a01 hr 12 minutes<\/p>\n<p>e)\u00a01 hr<\/p>\n<p><b>Question 5:\u00a0<\/b>If the speed of a train is reduced by 20 percent, the time taken to cover a given distance increases by 2 hours, what is the usual time taken to cover the given distance?<\/p>\n<p>a)\u00a010 hours<\/p>\n<p>b)\u00a016 hours<\/p>\n<p>c)\u00a08 hours<\/p>\n<p>d)\u00a012 hours<\/p>\n<p>e)\u00a018 hours<\/p>\n<p><b>Question 6:\u00a0<\/b>A and B are points on the circumference of a park such that AB is the diameter. The diameter is 210 m. P and Q, who are standing at points A and B, start running in opposite directions at a constant speed of 15 m\/s. After how much time will they meet each other?<\/p>\n<p>a)\u00a07 s<\/p>\n<p>b)\u00a09 s<\/p>\n<p>c)\u00a010 s<\/p>\n<p>d)\u00a011 s<\/p>\n<p>e)\u00a012 s<\/p>\n<p><b>Question 7:\u00a0<\/b>A tap can fill a tank in 6 hours. Because of a leakage, it filled the tank in 8 hours. How much time the leakage takes to empty a full tank?<\/p>\n<p>a)\u00a021 hours<\/p>\n<p>b)\u00a012 hours<\/p>\n<p>c)\u00a024 hours<\/p>\n<p>d)\u00a020 hours<\/p>\n<p>e)\u00a018 hours<\/p>\n<p><b>Question 8:\u00a0<\/b>A train of length 100m crosses a pole in 20 seconds. In how much time will it cross another train of length 200m which is travelling in the opposite direction with a speed double of it?<\/p>\n<p>a)\u00a013.33 sec<\/p>\n<p>b)\u00a015 sec<\/p>\n<p>c)\u00a020sec<\/p>\n<p>d)\u00a030 sec<\/p>\n<p>e)\u00a025 sec<\/p>\n<p><b>Question 9:\u00a0<\/b>A boat takes 4 hrs and 6hrs to travel certain distance upstream and downstream respectively. How much time it takes to travel five times the distance in still water?<\/p>\n<p>a)\u00a024 hours<\/p>\n<p>b)\u00a016 hours<\/p>\n<p>c)\u00a018 hours<\/p>\n<p>d)\u00a022 hours<\/p>\n<p>e)\u00a0None of these<\/p>\n<p><b>Question 10:\u00a0<\/b>Two trains A and B of equal lengths cross a pole in 60 seconds and 72 seconds respectively, how much time they take to cross each other if they are moving in opposite directions (in seconds)?<\/p>\n<p>a)\u00a064.32<\/p>\n<p>b)\u00a067.5<\/p>\n<p>c)\u00a068.34<\/p>\n<p>d)\u00a065.45<\/p>\n<p>e)\u00a062.3<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/ibps-rrb-clerk-mock-tests\" target=\"_blank\" class=\"btn btn-danger \">Free Mock Test for IBPS RRB PO<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/ibps-rrb-clerk-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">IBPS RRB Clerk Previous Papers<\/a><\/p>\n<p><b>Question 11:\u00a0<\/b>Amith starts running at a speed of 8km\/hr and for every half-n-hour his speed decreases by 1km\/hr. How much time amith takes to cover a distance of 16 km(in hours)?<\/p>\n<p>a)\u00a0$2$<\/p>\n<p>b)\u00a0$2\\frac{1}{6}$<\/p>\n<p>c)\u00a0$3$<\/p>\n<p>d)\u00a0$2\\frac{4}{6}$<\/p>\n<p>e)\u00a0$2\\frac{5}{6}$<\/p>\n<p><b>Question 12:\u00a0<\/b>A 250 m long train crosses a pole in 10 seconds. Find the time that the train will take to completely cross a platform of length 200 metres.(The train continues to run at the same speed)<\/p>\n<p>a)\u00a015 seconds<\/p>\n<p>b)\u00a018 seconds<\/p>\n<p>c)\u00a020 seconds<\/p>\n<p>d)\u00a025 seconds<\/p>\n<p>e)\u00a0cannot be determined<\/p>\n<p><b>Question 13:\u00a0<\/b>The speed of a boat in still water is 10 km\/hr and the speed of the stream is 3 km\/hr. How much time will the boat take to go a distance of 63 km upstream?<\/p>\n<p>a)\u00a07 hours<\/p>\n<p>b)\u00a08 hours<\/p>\n<p>c)\u00a09 hours<\/p>\n<p>d)\u00a010 hours<\/p>\n<p>e)\u00a011 hours<\/p>\n<p><b>Question 14:\u00a0<\/b>The speed of a boat in still water is 5 km\/hr. The speed of the stream is 3 km\/hr. The boat has to travel to a point 24 km far and has to come back to the starting point. How much time will the whole trip take?<\/p>\n<p>a)\u00a012 hours<\/p>\n<p>b)\u00a015 hours<\/p>\n<p>c)\u00a016 hours<\/p>\n<p>d)\u00a018 hours<\/p>\n<p>e)\u00a020 hours<\/p>\n<p><b>Question 15:\u00a0<\/b>The speeds of a boat upstream and downstream are 5 km\/hr and 15 km\/hr. How much time will it take for the boat to go from point A to point B upstream and come back to point A downstream? The distance between the points A and B is 15 km.<\/p>\n<p>a)\u00a01 hour<\/p>\n<p>b)\u00a02 hours<\/p>\n<p>c)\u00a03 hours<\/p>\n<p>d)\u00a04 hours<\/p>\n<p>e)\u00a0Cannot be determined<\/p>\n<p><b>Question 16:\u00a0<\/b>Two taps A, B can fill the tank together in 8 hours and tap A can fill the same tank in 12 hours. How much time does tap B take to fill the tank?<\/p>\n<p>a)\u00a013<\/p>\n<p>b)\u00a016<\/p>\n<p>c)\u00a024<\/p>\n<p>d)\u00a026<\/p>\n<p>e)\u00a0None of these<\/p>\n<p><b>Question 17:\u00a0<\/b>A train running at 72 km\/hr crosses a pole in 10 seconds. In how much time will it cross a platform of length of 400 m?<\/p>\n<p>a)\u00a015 seconds<\/p>\n<p>b)\u00a020 seconds<\/p>\n<p>c)\u00a025 seconds<\/p>\n<p>d)\u00a030 seconds<\/p>\n<p>e)\u00a0none of these<\/p>\n<p><b>Question 18:\u00a0<\/b>A train, which is running at 30 m\/s, crosses a pillar in 4 seconds. In how much time (in seconds) will it cross another train of same length which is running at a speed double of the first train, but in opposite direction?<\/p>\n<p>a)\u00a0$2\\frac{2}{5}$<\/p>\n<p>b)\u00a0$3\\frac{2}{3}$<\/p>\n<p>c)\u00a0$2\\frac{2}{3}$<\/p>\n<p>d)\u00a0$3\\frac{1}{2}$<\/p>\n<p>e)\u00a0None of these<\/p>\n<p><b>Question 19:\u00a0<\/b>The speed of a train, excluding stoppages, is 78 kmph. Including stoppages it is 65 km\/hr. What is the average stopping time of the train per hour?<\/p>\n<p>a)\u00a05 minutes<\/p>\n<p>b)\u00a06 minutes<\/p>\n<p>c)\u00a08 minutes<\/p>\n<p>d)\u00a010 minutes<\/p>\n<p>e)\u00a012 minutes<\/p>\n<p><b>Question 20:\u00a0<\/b>Two taps A, B can fill a tank together in 6 hours and tap A can fill the same tank in 8 hours. How much time does tap B take to fill the tank?<\/p>\n<p>a)\u00a012<\/p>\n<p>b)\u00a018<\/p>\n<p>c)\u00a028<\/p>\n<p>d)\u00a024<\/p>\n<p>e)\u00a0None of these<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/blog\/quantitative-aptitude-maths-formulas-ibps-po-pdf\/\" target=\"_blank\" class=\"btn btn-primary \">Quantitative Aptitude formulas PDF<\/a><\/p>\n<p><b>Question 21:\u00a0<\/b>A man starts at 10 km\/hr and for every one hour his speed decreases by 2km\/hr. How much time he takes to travel 25 km?<\/p>\n<p>a)\u00a04 hours<\/p>\n<p>b)\u00a0240 minutes<\/p>\n<p>c)\u00a03 hr 15 minutes<\/p>\n<p>d)\u00a0210 minutes<\/p>\n<p>e)\u00a0None of these<\/p>\n<p><b>Question 22:\u00a0<\/b>Two taps A, B can fill the tank together in 6 hours, and tap C can empty the tank in 8 hours. If all the taps are kept open, how much time it takes for the tank to get full?<\/p>\n<p>a)\u00a012<\/p>\n<p>b)\u00a018<\/p>\n<p>c)\u00a024<\/p>\n<p>d)\u00a028<\/p>\n<p>e)\u00a0None of these<\/p>\n<p><b>Question 23:\u00a0<\/b>A train having a length of 250m is travelling at 50 m\/s. What is the time taken by the train to cross a bridge having a length of 150m ?<\/p>\n<p>a)\u00a020s<\/p>\n<p>b)\u00a05s<\/p>\n<p>c)\u00a08s<\/p>\n<p>d)\u00a010s<\/p>\n<p>e)\u00a0none of these<\/p>\n<p><b>Question 24:\u00a0<\/b>Two taps A, B can fill the tank in 8, 6 hours respectively. If both the taps are opened at 12 pm and tap A is closed at 2 pm, at what time the tank will be full (initially empty)?<\/p>\n<p>a)\u00a04:30 pm<\/p>\n<p>b)\u00a04:35 pm<\/p>\n<p>c)\u00a04:40 pm<\/p>\n<p>d)\u00a04:10 pm<\/p>\n<p>e)\u00a0None of these<\/p>\n<p><b>Question 25:\u00a0<\/b>Prem and Amar start from 2 points, 100 km apart, towards each other at a constant speed of 33km\/hr and 17km\/hr. After how much time will they meet each other?<\/p>\n<p>a)\u00a02 hours<\/p>\n<p>b)\u00a01.5 hours<\/p>\n<p>c)\u00a04 hours<\/p>\n<p>d)\u00a06.25 hours<\/p>\n<p>e)\u00a05 hours<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/banking\/pricing\/banking-unlimited\" target=\"_blank\" class=\"btn btn-danger \">520 Banking Mocks &#8211; Just Rs. 499<\/a><\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Answers &amp; Solutions:<\/strong><\/span><\/p>\n<p><strong>1)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Speed of the boat upstream = 12-4 = 8 kmph<br \/>\nTime taken by boat to travel 480 km = 480\/8 = 60 h.<\/p>\n<p><strong>2)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Speed of boat upstream = 35 -5= 30 km\/hr<br \/>\nSpeed of boat downstream = 35+5= 40 km\/hr.<br \/>\n=&gt; Time taken for the whole journey = $\\frac{40}{30}+\\frac{10}{40} = 1.58$ hours<\/p>\n<p><strong>3)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>If his speed becomes 5\/4 times of his earlier speed. His time should become 4\/5 of his earlier time.<br \/>\nHence the reduction in time is 1\/5.<br \/>\nIn this case this 1\/5 corresponds to 12 minutes. Hence the time taken to reach the office at the speed of 40 km\/hr would be 12*5 = 60 minutes.<br \/>\nHence the distance would be 40*1 = 40 km.<br \/>\nNe needs to cover this distance in 50 minutes.<br \/>\nHence the required speed would be 40*6\/5 = 48 km\/hr<\/p>\n<p><strong>4)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Since, the speed of Roshan and Amar is in the ratio 7 : 5, the distance covered by them will also be in the ration 7 : 5. Thus, when Roshan meets Amar, he would have travelled 5\/12 x 120 = 50km. Thus, he has to cover 70 km more to reach P.<br \/>\nThe time required by Amar to travel 70km = distance \/speed = 70\/50 = 1.4 hrs = 1 hr 24 minutes<\/p>\n<p><strong>5)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>The speed is reduced by 20%, so the new speed is 4\/5 times the earlier speed.<br \/>\nHence the new time would 5\/4 times the earlier time.<br \/>\nSo if the usual time is x, then new time is 5x\/4<br \/>\n5x\/4 &#8211; x = 2<br \/>\n=&gt; x\/4 = 2<br \/>\n=&gt; x = 8<br \/>\nHence the usual time taken to cover the given distance is 8 hours.<\/p>\n<p><strong>6)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>Distance to be covered = $\\pi*r=\\frac{22}{7}*105=330$ m<br \/>\nAs both of them are running towards each other, the relative speed will be a sum of their speeds.<br \/>\nRelative speed = 15+15 = 30 m\/s<br \/>\nTime needed = 330\/30 = 11 s<\/p>\n<p><strong>7)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Let volume of the tank = V.<br \/>\nEfficiency of the tap = V\/6<br \/>\nEfficiency of the leakage = a<br \/>\n==&gt; V\/8 = V\/6 +a ==&gt; a = -1\/24 ==&gt; it takes 24 hours to drain the full tank.<\/p>\n<p><strong>8)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Since it crosses a pole in 20 seconds, the speed of train 1 = 100\/20 = 5m\/sec<br \/>\n=&gt; Speed of train 2 = 10 m\/s<br \/>\nDistance to be covered = 100+200=300m<br \/>\nRelative speed = 10+5=15 m\/s (As they are travelling in opposite directions)<br \/>\n=&gt; Crossing time = 300\/15=20 sec.<\/p>\n<p><strong>9)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Let the distance = x<br \/>\nSpeed of boat in still water = V<br \/>\nSpeed of the current = c<br \/>\nBased on the given information, the following equations could be derived.<br \/>\n$\\frac{x}{v-c}$ = 6 &#8212;(1)<br \/>\n$\\frac{x}{v+c}$ = 4 &#8212;(2)<br \/>\nBy solving both the equations, we could derive the following equation.<br \/>\n$V = \\frac{5x}{24}$<br \/>\nTime taken by the boat in still water to cover a distance of 5x = 24 hours.<\/p>\n<p><strong>10)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>Let the speeds of the trains A and B be a and b respectively.<br \/>\nLet the length of the trains =x<br \/>\nx\/a = 60 ==&gt; a = x\/60<br \/>\nx\/b = 72 ==&gt; b = x\/72<br \/>\n==&gt; 2x\/(a+b) = $\\frac{2x}{\\frac{x}{60}+\\frac{x}{72}}$ = 65.45 seconds.<\/p>\n<p><strong>11)\u00a0Answer\u00a0(E)<\/strong><\/p>\n<p>Distance travelled in first half-n-hour = 4km.<br \/>\nDistance travelled in second half-n-hour = 3.5km and so on\u2026.<br \/>\n==&gt; 4+3.5+3+2.5..n terms = 16<br \/>\nFor n=5, the sum of the terms = 15.<br \/>\nAnd in the next half-n-hour amith\u2019s speed = 3km\/hr<br \/>\nTime taken by Amith to cover a distance of 1km = 1\/3 hr.<br \/>\n==&gt; Total time taken by Amith to cover a distance of 16 km = $2\\frac{1}{2}+\\frac{1}{3}$hr = $2\\frac{5}{6}$ hr.<\/p>\n<p><strong>12)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>The train crosses a pole in 10 seconds, so the speed of the train = 250\/10 = 25 m\/s<br \/>\nNow when the train goes on to cross the platform, the total distance to be covered is length of train + length of platform. So required time = 450\/25 = 18 seconds<\/p>\n<p><strong>13)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>The speed of boat in still water, u = 10 km\/hr<br \/>\nThe speed of the stream, v = 3 km\/hr<br \/>\nThe relative speed of the boat while moving upstream = u-v = 10-3 = 7 km\/hr.<br \/>\nTime taken = 63\/7 = 9 hours.<\/p>\n<p><strong>14)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>The speed of the boat in still water, u = 5 km\/hr.<br \/>\nThe speed of the stream, v = 3 km\/hr<br \/>\nThe speed of the boat while going upstream = 5-3 = 2 km\/hr<br \/>\nTime taken for the journey upstream = 24\/2 = 12 hours.<br \/>\nThe speed of the boat while going downstream = 5+3 = 8 km\/hr<br \/>\nTime taken for the journey downstream = 24\/8 = 3 hours.<br \/>\nTime taken for the whole trip = 12+3 = 15 hours.<br \/>\nHence the answer to this question is Option B.<\/p>\n<p><strong>15)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>The boat has to travel from point A to point B and then back to point A.<br \/>\nSo one half of the journey will be travelled upstream and the other half will be travelled downstream.<br \/>\nThe speed of the boat upstream = 5 km\/hr<br \/>\nTime taken for the journey upstream = 15\/5 = 3 hours.<br \/>\nThe speed of the boat downstream = 15 km\/hr<br \/>\nTime taken for the journey downstream = 15\/15 = 1 hour.<br \/>\nTotal time taken for the whole journey = 3+1 = 4 hours.<br \/>\nHence the answer to this question is Option D.<\/p>\n<p><strong>16)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Let the volume of the tank = V<br \/>\nLet the efficiency of the tap A = V\/A<br \/>\nAnd efficiency of the tap B = V\/B<br \/>\n==&gt;(V\/A + V\/ B)*8 = V<br \/>\n==&gt; (V\/A + V\/B) = V\/8<br \/>\nBut V\/A = V\/12 ==&gt; V\/12 + V\/B= V\/8 ==&gt; V\/B = V\/8 &#8211; V\/12 ==&gt; V\/B = V\/24<br \/>\nTherefore tap B takes 24 hours to fill the tank.<\/p>\n<p><strong>17)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>Speed of train = 72 km\/hr = 20 m\/s<br \/>\nIt crosses a pole in 10 seconds. So length of train = 20*10 = 200m<br \/>\nWhile crossing the platform, total distance to be covered is 400+200 = 600 m<br \/>\n=&gt; Hence required time = 600\/20 = 30 seconds<\/p>\n<p><strong>18)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Let the length of the train be l m.<br \/>\n=&gt; l= 4 X 30 m= 120m<br \/>\nThe other train is running at double speed, i.e. 60 m\/s in the opposite direction.<br \/>\nSo, the relative speed = 60+30=90 m\/s<br \/>\nDistance to cover is 2l=240m<br \/>\n=&gt; Time taken is 240\/90 seconds= 8\/3 seconds.<\/p>\n<p><strong>19)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>Without stopping the train can travel 78 km in one hour.<br \/>\nBut it travels only 65 km in one hour. It means that it stops for the time for which it should have travelled 13 km (78-65).<br \/>\nSo the stopping time = (13\/78)*60 = 10 minutes per hour.<\/p>\n<p><strong>20)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>Let the volume of the tank = V<br \/>\nLet the efficiency of the tap A = V\/A<br \/>\nAnd efficiency of the tap B = V\/B<br \/>\n==&gt;(V\/A + V\/ B)*6 = V<br \/>\n==&gt; (V\/A + V\/B) = V\/6<br \/>\nBut V\/A = V\/8 ==&gt; V\/8 + V\/B= V\/6 ==&gt; V\/B = V\/6 &#8211; V\/8 ==&gt; V\/B = V\/24<br \/>\nTherefore tap B takes 24 hours to fill the tank.<\/p>\n<p><strong>21)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Distance traveled by him in the first hour = 10 km<br \/>\nDistance traveled by him in the second hour = 8 km<br \/>\nDistance traveled by him in the third hour = 6 km<br \/>\nTotal distance traveled by him in three hours = 24<br \/>\nSpeed during the fourth hour = 4 km\/hr<br \/>\n==&gt;Time taken by him to travel 1 km = \u00bc hr = 15minutes.<br \/>\nSo the correct option to choose is C &#8211; 3 hr 15 minutes.<\/p>\n<p><strong>22)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Let the volume of the tank = V<br \/>\nLet the efficiency of the tap A = V\/A<br \/>\nAnd efficiency of the tap B = V\/B<br \/>\n==&gt;(V\/A + V\/ B)*6 = V<br \/>\n==&gt; (V\/A + V\/B) = V\/6<br \/>\nEfficiency of tap C to empty the tank = V\/C<br \/>\n==&gt; (V\/C)*8 = V ==&gt; (V\/C) = (V\/8)<br \/>\n==&gt; ($\\frac{V}{A} + \\frac{V}{B}- \\frac{V}{C}$) = (V\/6 -V\/8)<br \/>\n= V\/24<br \/>\nTherefore it takes 24 hours for the tank to get full.<\/p>\n<p><strong>23)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>By TSD relation,<br \/>\nspeed of train = distance covered by train\/time taken = length of train + bridge\/t<br \/>\n=&gt; t = 400\/50 = 8s<\/p>\n<p><strong>24)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Let the volume of the tank = V<br \/>\nPortion of the tank filled with water at 2 pm = 2(v\/6 + v\/8) = 7v\/12<br \/>\nTime taken by B to fill the remaining portion of the tank = t<br \/>\n==&gt;(v\/6)*t = (v &#8211; 7v\/12) = 5v\/12<br \/>\n==&gt;t = (5\/2) = 2 $\\frac{1}{2}$ hours = 2 hours 30 minutes<br \/>\n==&gt;at (2+2 hours 30 minutes) = 4:30 pm the tank will be full.<\/p>\n<p><strong>25)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Since they are moving towards each other, their relative speed will be the sum of their individual speeds = (33+17)=50km\/hr. The distance between them is 100km. Thus, the time taken by them will be-<br \/>\n$\\frac{100}{50}hours$= 2 hours.<br \/>\nThus, the answer is A.<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/ibps-rrb-po-previous-papers\" target=\"_blank\" class=\"btn btn-info \">IBPS RRB PO Previous Papers (Download PDF)<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.cracku.app&amp;hl=en\" target=\"_blank\" class=\"btn btn-danger \">Download IBPS RRB Free Preparation App<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Time and Work Questions for IBPS RRB Clerk: Download Top-20 IBPS RRB Clerk Data Interpretation Questions PDF. Data Interpretation questions based on asked questions in previous year exam papers very important for the IBPS RRB Assistant exam Take a free mock test for IBPS RRB Clerk Download IBPS RRB Clerk Previous Papers PDF Question 1:\u00a0The [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":30965,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,2067,2071],"tags":[2073,2077,2075,2079],"class_list":{"0":"post-30958","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads","8":"category-featured","9":"category-ibps-rrb-clerk","10":"category-ibps-rrb-clerk-en","11":"tag-ibps-rrb-clerk-free-mock","12":"tag-ibps-rrb-clerk-pdf","13":"tag-ibps-rrb-clerk-previous-papers","14":"tag-ibps-rrb-clerk-syllabus"},"better_featured_image":{"id":30965,"alt_text":"Time and Work 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