{"id":27616,"date":"2019-04-18T18:35:34","date_gmt":"2019-04-18T13:05:34","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=27616"},"modified":"2019-04-18T18:35:34","modified_gmt":"2019-04-18T13:05:34","slug":"time-work-questions-for-rrb-group-d-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/time-work-questions-for-rrb-group-d-pdf\/","title":{"rendered":"Time & Work Questions for RRB Group-D PDF"},"content":{"rendered":"

Time & Work Questions for RRB Group-D PDF<\/strong><\/span><\/h1>\n

Download Top 15 RRB Group-D Time & Work Questions and Answers PDF. RRB Group-D Time & Work questions based on asked questions in previous exam papers very important for the Railway Group-D exam.<\/p>\n

Download Time & Work Questions for RRB Group-D PDF<\/a><\/p>\n\n

Download RRB Group-D Previous Papers PDF<\/a><\/p>\n

Take a RRB Group-D free mock test<\/a><\/p>\n

Question 1:\u00a0<\/b>A person working 8 hours per day completed a piece of work in 9 days. If the work needs to be completed in 6 days, how many hours should he work per day?<\/p>\n

a)\u00a012 hours<\/p>\n

b)\u00a010 hours<\/p>\n

c)\u00a014 hours<\/p>\n

d)\u00a016 hours<\/p>\n

Question 2:\u00a0<\/b>\u2018P\u2019 can complete a work in 15 days. \u2018Q\u2019 can complete the same work in 45 days.If they want to complete the work by working 3 days each alternatively starting with P then how many days does it take to complete whole work<\/p>\n

a)\u00a030 days<\/p>\n

b)\u00a027 days<\/p>\n

c)\u00a021 days<\/p>\n

d)\u00a024 days<\/p>\n

Question 3:\u00a0<\/b>A and B can do a piece of work individually in 12 hours and 20 hours respectively. They work on alternate hours starting with A. Then in how many hours, will the total work be completed?<\/p>\n

a)\u00a012 hr 48 min<\/p>\n

b)\u00a014 hr 48 min<\/p>\n

c)\u00a016 hr 36 min<\/p>\n

d)\u00a014 hr 36 min<\/p>\n

Take a free mock test for RRB Group-D<\/a><\/p>\n\n

Question 4:\u00a0<\/b>A,B and C can do a piece of work individually in 12,16 and 24 days respectively. They all started the work together but after 4 days, A and B left. Then, in how many days total work will be completed?<\/p>\n

a)\u00a04 days<\/p>\n

b)\u00a06 days<\/p>\n

c)\u00a010 days<\/p>\n

d)\u00a012 days<\/p>\n

Question 5:\u00a0<\/b>Ravi started his journey from his house to office with 40 kmph speed, it took 2hrs for him to reach his office. Then find the time at which he reached his home if he travels at a speed of 30 kmph ?<\/p>\n

a)\u00a0$2\\frac{3}{2}hrs$<\/p>\n

b)\u00a0$2\\frac{2}{3}hrs$<\/p>\n

c)\u00a0$3\\frac{2}{3}hrs$<\/p>\n

d)\u00a0$3\\frac{3}{2}hrs$<\/p>\n

Question 6:\u00a0<\/b>2 men or 3 women can complete a work in 12 days, then in how many days can 3 men and 9 women complete the work ?<\/p>\n

a)\u00a0$2\\frac{1}{3}$ days<\/p>\n

b)\u00a0$2\\frac{2}{3}$ days<\/p>\n

c)\u00a0$3$ days<\/p>\n

d)\u00a0$3\\frac{1}{3}$ days<\/p>\n

RRB Group D previous year papers<\/a><\/p>\n

Daily Free RRB Online Test<\/a><\/p>\n

Question 7:\u00a0<\/b>What is the time taken by a flight to cover 1875 km if it is moving at 500 kmph?<\/p>\n

a)\u00a03hrs 30mins<\/p>\n

b)\u00a03hrs 35mins<\/p>\n

c)\u00a03hrs 40mins<\/p>\n

d)\u00a03hrs 45mins<\/p>\n

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Question 8:\u00a0<\/b>Train A of length 300m and Train B of length 600m are travelling with 35kmph and 55kmph respectively. Find the time taken by them to cross each other if they are moving in opposite direction ?<\/p>\n

a)\u00a032 seconds<\/p>\n

b)\u00a034 seconds<\/p>\n

c)\u00a036 seconds<\/p>\n

d)\u00a038 seconds<\/p>\n

Question 9:\u00a0<\/b>Deepak and Gaurav can finish a piece of work in 24 days. Both of them started the work but Gaurav left after 10 days. Deepak completed the rest of the work in 28 days. How much time will Deepak take to complete the entire work alone?<\/p>\n

a)\u00a048 days<\/p>\n

b)\u00a060 days<\/p>\n

c)\u00a040 days<\/p>\n

d)\u00a054 days<\/p>\n

Question 10:\u00a0<\/b>12 men can do a piece of work in 10 days. How many men would be required to do the same work in 8 days ?<\/p>\n

a)\u00a014<\/p>\n

b)\u00a018<\/p>\n

c)\u00a016<\/p>\n

d)\u00a015<\/p>\n

Question 11:\u00a0<\/b>What is the time at which hour hand and minute hand meet between 2 o clock and 3 o clock?<\/p>\n

a)\u00a010 minutes after 2<\/p>\n

b)\u00a0120\/11 minutes after 2<\/p>\n

c)\u00a0117\/11 minutes after 2<\/p>\n

d)\u00a015 minutes after 2<\/p>\n

RRB Group-D Important Questions (download PDF)<\/a><\/p>\n\n

Question 12:\u00a0<\/b>Two trains of length 150m and 250m are travelling at the speed of 25m\/s and 15m\/s in the opposite direction. Find the time taken by the trains to cross each other completely.<\/p>\n

a)\u00a08 s<\/p>\n

b)\u00a014 s<\/p>\n

c)\u00a012 s<\/p>\n

d)\u00a010 s<\/p>\n

Question 13:\u00a0<\/b>Sita and Gita can do a particular work in 20 days and 25 days respectively. Both Sita and Gita start working together and after 5 days Gita leaves. How many more days would Sita require to complete the work?<\/p>\n

a)\u00a011 days<\/p>\n

b)\u00a015 days<\/p>\n

c)\u00a020 days<\/p>\n

d)\u00a06 days<\/p>\n

Question 14:\u00a0<\/b>Find the time taken by police to catch a thief if the thief is running at the speed of 30km\/hr and the police is following him at the speed of 75km\/hr and the initial distance between them is 200m.<\/p>\n

a)\u00a020 seconds<\/p>\n

b)\u00a012 seconds<\/p>\n

c)\u00a016 seconds<\/p>\n

d)\u00a08 seconds<\/p>\n

Question 15:\u00a0<\/b>Ram and Shyam can do a work in 24 days. Shyam alone can do its 1\/3 part in 12 days. How long will Ram take to complete the remaining work?<\/p>\n

a)\u00a024 days<\/p>\n

b)\u00a072 days<\/p>\n

c)\u00a048 days<\/p>\n

d)\u00a096 days<\/p>\n

General Science Notes for RRB Exams (PDF)<\/a><\/p>\n\n

Answers & Solutions:<\/strong><\/span><\/p>\n

1)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

$\\text{No. of hours}_1\\times\\text{No. of days}_1 = \\text{No. of hours}_2\\times\\text{No. of days}_2$
\nLet the number of hours he should work per day be x
\n\u21d2 $8\\times9 = 6\\times x$
\n\u21d2 $x = 12$<\/p>\n

2)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

LCM of 15 and 45 is 45. Total units of work=45
\nP can do 45\/15 =3 units per day
\nQ can do 15\/15=1 units per day
\nSo starting with P we have 9+3+9+3+9+3+9=45
\nSo total it takes 9*3=21 days<\/p>\n

3)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

Let the total work be 60 units (LCM of 12 and 20)
\nEfficiency of A = 60\/12 = 5 units\/hr
\nEfficiency of B = 60\/20 = 3 units\/hr
\nThey work on alternate days.
\nThen, A and B can do 8 units in 2 hours.
\n\u21d2 56 units of work will be completed in 14 hours.
\nRemaining work = 4 units
\nA can complete 5 units in 1 hour
\nThen, 4 units of work can be completed by A in 4\/5th of an hour = $\\dfrac{4}{5}\\times60 = 48$ min
\nTherefore, Total work will be completed in 14 hours 48 min.<\/p>\n

4)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

Let the total work be 48 units (LCM of 12,16 and 24).
\nEfficiency of A = 48\/12 = 4 units\/day
\nEfficiency of B = 48\/16 = 3 units\/day
\nEfficiency of C = 48\/24 = 2 units\/day
\nThen, Total work done by A,B,C in one day = 9 units
\nIn 4 days, 36 units of work will be completed.
\nRemaining work = 48-36 = 12 units.
\n12 units will be completed by C in 12\/2 = 6 days.
\nTherefore, Total work will be done in 4+6 = 10 days<\/p>\n

5)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

Distance b\/w his house & office = Speed*time = 40*2 = 80 km<\/p>\n

In second case, his speed = 30 kmph<\/p>\n

Time taken to reach his home = $Distance\/speed = 80\/30 = 8\/3 = 2\\frac{2}{3}hrs$<\/p>\n

So the answer is option B.<\/p>\n

6)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

2 men can complete the work in 12 days ==> so 1 man can do it in 12*2 = 24 days ==> efficiency of man = 1\/24<\/p>\n

3 women can complete the work in 12 days ==> so 1 woman can do it in 12*3 = 36 days ==> efficiency of man = 1\/36<\/p>\n

let 3 men and 9 women complete the work in x days, then<\/p>\n

$\\frac{1}{x} = 3(\\frac{1}{24})+9(\\frac{1}{36})$<\/p>\n

==>\u00a0$\\frac{1}{x} = (\\frac{1}{8})+(\\frac{1}{4})$<\/p>\n

==>\u00a0$\\frac{1}{x} = (\\frac{1}{8})+9(\\frac{2}{8})$<\/p>\n

==> $\\frac{1}{x} = \\frac{3}{8}$<\/p>\n

==> $x = 8\/3 = 2\\frac{2}{3}$ days<\/p>\n

So the answer is option B.<\/p>\n

7)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

Time = $\\frac{distance}{speed} = \\frac{1875}{500} = 3\\frac{3}{4}hrs = 3hrs.45mins$<\/p>\n

So the answer is option D.<\/p>\n

8)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

relative speed = 35+55 = 90 kmph = 90*(5\/18) = 25 m\/s<\/p>\n

Time taken to cross each other = $\\frac{300+600}{25} = 36 seconds$<\/p>\n

So the answer is option C.<\/p>\n

9)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

Let us assume that Deepak alone can finish the work in \u2018x\u2019 days and Gaurav alone can finish it in \u2018y\u2019 days. So we have
\n$\\frac{1}{x} + \\frac{1}{y} = \\frac{1}{24}$
\nMoreover
\n$\\frac{38}{x} + \\frac{10}{y} = 1$
\n=> Dividing this equation by 10, we get
\n$\\frac{3.8}{x} + \\frac{1}{y} = \\frac{1}{10}$
\nComparing the two equations, we get
\n$\\frac{1}{10} – \\frac{3.8}{x } = \\frac{1}{24} – \\frac{1}{x} $
\n=> $\\frac{2.8}{x} = \\frac{1}{10} – \\frac{1}{24}$
\n=> x = 48
\nHence, Deepak can finish the work alone in 48 days<\/p>\n

10)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

12 men can do a work in 10 days<\/p>\n

How many men are needed to complete the work in 8 days<\/p>\n

= 12 x 10 \/ 8 = 15<\/p>\n

11)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

At 2 o clock, the angle between the hour hand and minute hand is 60 degrees. This means that the relative distance between the two hands is 60 degrees.
\nRelative velocity of minute hand with respect to hour hand = 11\/2 degrees per minute.
\nTime taken by minute hand to cover the gap of 60 degrees =$\\frac{60}{\\frac{11}{2}} =\\frac{120}{11}$ minutes.<\/p>\n

12)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

Sum of the Length of the trains = 150m + 250m = 400m. Hence, the trains have to cover 400m to completely cross each other.
\nAs they are moving in opposite directions, we add their velocities. Hence, Relative velocities = 25+15 = 40m\/s
\nTime taken = 400\/40 = 10s<\/p>\n

13)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

Sita and Gita 5 days work = 5(1\/20 + 1\/25) = 9\/20
\nRemaining work = 1 – 9\/20 = 11\/20
\nSita will complete 11\/20 work in $\\frac{\\frac{11}{20}}{\\frac{1}{20}}$ = 11 days.<\/p>\n

14)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

Initial distance = 200m
\nRelative speed = 75-30 km\/hr = 45km\/hr = 12.5m\/s
\nTime = 200\/12.5 = 16s<\/p>\n

15)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

Shyam can do 1\/3 rd work in 12 days. Therefore Shyam can do full work in 36 days.
\n1\/36 + 1\/x = 1\/24
\nx = 72 days
\nRam can do full work in 72 days.
\nRam can do 2\/3 rd of work in 2*72\/3 = 48 days<\/p>\n\n

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We hope this Time & Work Questions for RRB Group-D Exam will be highly useful for your preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"

Time & Work Questions for RRB Group-D PDF Download Top 15 RRB Group-D Time & Work Questions and Answers PDF. RRB Group-D Time & Work questions based on asked questions in previous exam papers very important for the Railway Group-D exam. Download RRB Group-D Previous Papers PDF Take a RRB Group-D free mock test Question […]<\/p>\n","protected":false},"author":41,"featured_media":27620,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,31,1679],"tags":[489,491,1819,1647],"class_list":{"0":"post-27616","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads","8":"category-featured","9":"category-railways","10":"category-rrb-group-d","11":"tag-railway-exam","12":"tag-rrb","13":"tag-rrb-group-d-exam","14":"tag-rrb-mocks"},"better_featured_image":{"id":27620,"alt_text":"Time & Work Questions for RRB Group-D PDF","caption":"Time & Work Questions for RRB Group-D PDF","description":"Time & Work Questions for RRB Group-D 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