{"id":31137,"date":"2019-07-04T19:00:05","date_gmt":"2019-07-04T13:30:05","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=31137"},"modified":"2019-11-01T12:48:04","modified_gmt":"2019-11-01T07:18:04","slug":"mixtures-alligations-questions-for-rrb-ntpc-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/mixtures-alligations-questions-for-rrb-ntpc-pdf\/","title":{"rendered":"Mixtures & Alligations Questions for RRB NTPC PDF"},"content":{"rendered":"

Mixtures & Alligations Questions for RRB NTPC PDF<\/strong><\/span><\/h2>\n

Download RRB NTPC\u00a0Mixtures & Alligations Questions and Answers PDF. Top 15 RRB NTPC\u00a0Mixtures & Alligations questions based on asked questions in previous exam papers very important for the Railway NTPC exam.<\/p>\n

Download Mixtures & Alligations Questions for RRB NTPC PDF<\/a><\/p>\n

Take a free mock test for RRB NTPC<\/a><\/p>\n

Download RRB NTPC Previous Papers PDF<\/a><\/p>\n

Question 1:\u00a0<\/b>An alloy A is made up of Zinc and Copper in the ratio 2 : 3 and an alloy B is made up of Zinc and Aluminum in the ratio 3 : 4. If another alloy C is made from 10 kg of alloy A and 14 kg of alloy B, then what is the proportion of Zinc present in alloy C?<\/p>\n

a)\u00a03\/7<\/p>\n

b)\u00a05\/12<\/p>\n

c)\u00a04\/9<\/p>\n

d)\u00a05\/7<\/p>\n

e)\u00a0none of these<\/p>\n

Question 2:\u00a0<\/b>A and B are two vessels of equal volumes. A contains milk water mixture in which the ratio of milk and water is 3:1. B contains milk water mixture in the ratio 7:1. In what ratio should the contents of the two vessels be mixed so that the resultant mixture has 80% milk?<\/p>\n

a)\u00a02:3<\/p>\n

b)\u00a03:2<\/p>\n

c)\u00a04:3<\/p>\n

d)\u00a03:4<\/p>\n

e)\u00a05:4<\/p>\n

Question 3:\u00a0<\/b>Two equal volume mixtures containing acid and water in the ratio 4:1 and 5:3 respectively are combined. What is the approximate acid percentage of the resultant solution?<\/p>\n

a)\u00a065%<\/p>\n

b)\u00a070%<\/p>\n

c)\u00a075%<\/p>\n

d)\u00a080%<\/p>\n

e)\u00a085%<\/p>\n

RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n\n

Question 4:\u00a0<\/b>Fresh grapes contain 75% water (by weight) while dry grapes contain 20 % water (by weight). Anil bought 40 kg fresh grapes and kept them in the sun. The grapes dried in one day. What is the weight of the dried grapes?<\/p>\n

a)\u00a015 kg<\/p>\n

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

c)\u00a018 kg<\/p>\n

d)\u00a012.5 kg<\/p>\n

e)\u00a0none of these<\/p>\n

Question 5:\u00a0<\/b>Solution A has alcohol and water in the ratio 3:1. Solution B has water and alcohol in the ratio 2:3. In what ratio must A and B be mixed such that the ratio of alcohol and water in the resultant solution is 7:3?<\/p>\n

a)\u00a01:2<\/p>\n

b)\u00a02:1<\/p>\n

c)\u00a01:6<\/p>\n

d)\u00a06:1<\/p>\n

e)\u00a04:3<\/p>\n

Question 6:\u00a0<\/b>A and B are mixtures of milk and water. In mixture A, the concentration of milk in the solution is 40% while in mixture B, the concentration of water in the solution is 40%. If a new mixture C is made by mixing A and B in the ratio 1:2, what is the concentration of milk in C?<\/p>\n

a)\u00a040%<\/p>\n

b)\u00a047.67%<\/p>\n

c)\u00a053.33%<\/p>\n

d)\u00a050%<\/p>\n

e)\u00a0Cannot be determined<\/p>\n

RRB NTPC Free Mock Test<\/a><\/p>\n

FREE RRB NTPC YOUTUBE VIDEOS<\/a><\/p>\n

Question 7:\u00a0<\/b>A 1 litre solution has milk and water in the ratio 2:3. 100 ml from this solution is replaced with pure milk. What will be the new ratio of milk and water in the solution?<\/p>\n

a)\u00a04:7<\/p>\n

b)\u00a011:18<\/p>\n

c)\u00a03:5<\/p>\n

d)\u00a021:27<\/p>\n

e)\u00a023:27<\/p>\n

Question 8:\u00a0<\/b>In what ratio a type of rice at 8 Rs\/kg should be mixed with another type of rice at 13 Rs\/kg such that the mixture worth 10 Rs\/kg.<\/p>\n

a)\u00a01:4<\/p>\n

b)\u00a02:7<\/p>\n

c)\u00a01:1<\/p>\n

d)\u00a03:5<\/p>\n

e)\u00a03:2<\/p>\n

Question 9:\u00a0<\/b>Wine to milk ratio in two mixtures A and B is 2:3 and 5:1 respectively, if these mixtures are mixed in the ratio 2:1, find the ratio of milk to wine in the resultant mixture.<\/p>\n

a)\u00a01:4<\/p>\n

b)\u00a02:7<\/p>\n

c)\u00a01:1<\/p>\n

d)\u00a03:5<\/p>\n

e)\u00a0None of these<\/p>\n

 <\/p>\n

Question 10:\u00a0<\/b>Milk and grapes are mixed in the ratio 5:3 by weights and this mixture is dried to form a sweet. During this process grapes lost 20% of their weight and milk lost 24% of its weight. Find the proportion of grapes in the sweet thus formed.<\/p>\n

a)\u00a038.7%<\/p>\n

b)\u00a036.5%<\/p>\n

c)\u00a042.3%<\/p>\n

d)\u00a044.5%<\/p>\n

e)\u00a038.6%<\/p>\n

18000+ Questions – Free SSC Study Material<\/a><\/p>\n

Download General Science Notes PDF<\/a><\/p>\n

Question 11:\u00a0<\/b>Two mixtures A, B with milk to water ratios 5:2, 3:4 respectively are mixed in equal quantities to form a mixture C. what is the ratio of milk to water in C?<\/p>\n

a)\u00a04:3<\/p>\n

b)\u00a03:2<\/p>\n

c)\u00a01:5<\/p>\n

d)\u00a02:3<\/p>\n

e)\u00a0None of these<\/p>\n

Question 12:\u00a0<\/b>The ratio of milk to water in a 120 liter mixture is 7:3, how many liters of extra water to be added so that the ratio becomes 7:5.<\/p>\n

a)\u00a028<\/p>\n

b)\u00a013<\/p>\n

c)\u00a026<\/p>\n

d)\u00a024<\/p>\n

e)\u00a025<\/p>\n

 <\/p>\n

Question 13:\u00a0<\/b>In what ratio must 5% concentrated acid be mixed with 40% concentrated acid to get 25% concentrated acid?<\/p>\n

a)\u00a01:2<\/p>\n

b)\u00a02:5<\/p>\n

c)\u00a04:3<\/p>\n

d)\u00a03:4<\/p>\n

e)\u00a0Cannot be determined<\/p>\n

Question 14:\u00a0<\/b>In what ratio should a milkman mix water and milk such that he earns a profit of 25% by selling the milk at the cost price? (water is free)<\/p>\n

a)\u00a04:1<\/p>\n

b)\u00a01:4<\/p>\n

c)\u00a03:1<\/p>\n

d)\u00a01:3<\/p>\n

e)\u00a01:5<\/p>\n

Question 15:\u00a0<\/b>A dealer mixed 1.5 litres of Rs 50\/litre petrol with 2.5 litres of Rs. 40\/ litre petrol. What is the rate of the new mixture?<\/p>\n

a)\u00a0Rs. 43.75 per litre<\/p>\n

b)\u00a0Rs. 44.75 per litre<\/p>\n

c)\u00a0Rs. 45.75 per litre<\/p>\n

d)\u00a0Rs. 46.75 per litre<\/p>\n

e)\u00a0None of the above<\/p>\n

Daily Free RRB Online Tests for RRB Exams<\/a><\/p>\n

100+ Free Online G.K Tests<\/a><\/p>\n

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

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

The amount of Zinc present in 10kg of Alloy A = 2\/5 of 10 = 4kg
\nThe amount of Zinc present in 14kg of Alloy B = 3\/7 of 14 = 6kg
\nThus, total amount of Zinc present in 24 kg Alloy C = 6 + 4 = 10 kg
\nThus, the proportion if Zinc present in Alloy C = 10\/24 = 5\/12<\/p>\n

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

The percentage concentration of milk in the first vessel is 75% and the percentage concentration of milk in the second vessel is 87.5%. The desired quantity of milk is 80%.
\nLet\u2019s say a litres of mixture A and b litres of mixture B gives the desired quantity. Then,
\n75a + 87.5b = 80(a+b)
\n=> 7.5b = 5a
\n=> a\/b = 3\/2
\nHence the ratio in which the contents of A and B should be mixed to get the desired result is 3:2.<\/p>\n

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

Let the volumes of each of the original solutions be 80 ml each.
\n1st solution -> 64 ml acid and 16 ml water
\n2nd solution -> 50 ml acid and 30 ml water
\nThe combined solution will have 114 ml acid and 46 ml water.
\nAcid % = $\\frac{114}{160}\\times100\\approx70$%<\/p>\n

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

40 kg of fresh grapes will have 75% water so the amount of pulp would be 25%.
\nHence the amount of pulp in the grapes that Anil bought = .25*40 = 10 kg
\nWe know that 80% of dry grapes contain pulp.
\nIf the weight of dry grapes is ‘x’, then 0.8x = 10kg
\nHence x = 10\/0.8 = 12.5kg
\nNow dried grapes consist of 80% pulp. Hence the total weight of the dried grapes would be 10\/.8 = 12.5 kg.<\/p>\n

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

Using alligation formula, we get<\/p>\n

<\/p>\n

Hence, the required ratio is 2:1<\/p>\n

Alternative solution:
\nLet the quantity of A be m and the quantity of B be n.
\nGiven, the resultant mixture has alcohol to water ratio of 7 : 3, which implies alcohol to solution ratio of 7 : 10.<\/p>\n

$\\frac{\\frac{3m}{4}+ \\frac{3n}{5}}{m + n} = \\frac{7}{10}$<\/p>\n

14m + 14n = 15m + 12n<\/p>\n

m : n = 2 : 1<\/p>\n

Free RRB Daily Practice Set<\/a><\/p>\n

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

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

Let us assume that mixture C is created by mixing 100 units of A with 200 units of B.
\n=> Total volume of C=300 units.
\nMilk in 100 units of A = 40 units.
\nMilk in 200 units of B = 120 units [40% is the water concentration in B => 60% is the concentration of milk in B]
\nTotal milk in C = 160 units.
\n=> Concentration = (160\/300) X 100<\/p>\n

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

Milk to water ratio is 2:3 initially.
\nVolume of milk = 400 ml and volume of water = 600 ml in the solution.
\nNow 100 ml is removed.
\nThis means 40 ml of milk and 60 ml of water is removed.
\nNow 100 ml of milk is added.
\nNew volume of milk = 400-40+100 = 460 ml.
\nNew volume of water = 600-60 = 540 ml.
\nRatio = 460:540 = 23:27.<\/p>\n

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

Let the quantities mixed be $x, y.$
\nBased on the given information, the following equation could be derived.
\n$\\frac{8x+13y}{x+y} = 10$ ==> $3y = 2x$
\n==> $x:y = 3 :2$
\nSince there is no such option, the correct option to choose is E.<\/p>\n

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

Let the total volume of the resultant mixture = V.
\n==> Volume of mixture A = 2V\/3
\n==> Volume of wine mixed through mixture A = (2\/5)*(2v\/3) =4v\/15
\nSimilarly volume of wine mixed through the mixture B = (5\/6)*(V\/3) = 5v\/18.
\n==> Total volume of wine in that mixture = 49v\/ 90
\n==> Volume of milk in the mixture = (V – 49V\/90) = 41v\/90
\nRatio of milk to wine = 41:49.
\nSince there is no such option, the correct option to choose is E.<\/p>\n

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

Let the weight of mixture formed before drying =x
\n==> Weight of milk before drying = 5x\/8, weight after drying = 0.76*5x\/8 = 3.8x\/8
\nWeight of grapes before drying = 3x\/8, weight after drying = 0.8*3x\/8 = 2.4x\/8
\n==> Percentage of grapes in the sweet formed = (2.4\/6.2)*100 = 38.7%<\/p>\n

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

Let the volume of each mixture =x
\n==> Total amount of milk in the mixture = (5x\/7 + 3x\/7) =8x\/7
\n==> total amount of water in the mixture = 2x – 8x\/7= 6x\/7
\n==> milk to water ratio = 4:3<\/p>\n

So the correct option to choose is A.<\/p>\n

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

Number of liters of milk in the initial mixture = (120\/10)*7 = 84
\nNumber of liters of water = (120\/10)*3 = 36
\nLet x be the amount of water that should be added.
\n==> 84\/(36+x) = 7\/5 ==> 84*5 = (36+x)*7 ==> x = 24.
\nSo the correct option to choose is D.<\/p>\n

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

We use the alligation method
\n5%——40%
\n—\\——\/—
\n—–25%—-
\n—\/——\\—
\n15——-20-<\/p>\n

The ratio is 15:20 or 3:4.<\/p>\n

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

Let\u2019s say 100 ml of milk is worth 100 rupees. So if the milkman wants to get 25% profit after selling a thing for 100, then its cost price should be 100\/1.25 = 80
\nHence he should only sell 80 ml milk and should add 20ml water.
\nHence the required ratio of water and milk is 1:4<\/p>\n

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

The total cost of petrol in the mixture of 4 litres = 1.5 * 50 + 2.5 * 40 = 75 + 100 = Rs. 175
\nSo, the rate per litre = 175\/4 = 43.75<\/p>\n

Take a free RRB NTPC mock test<\/a><\/p>\n

DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n

We hope this\u00a0Mixtures & Alligations Questions\u00a0 for RRB NTPC Exam will be highly useful for your Preparation.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Mixtures & Alligations Questions for RRB NTPC PDF Download RRB NTPC\u00a0Mixtures & Alligations Questions and Answers PDF. Top 15 RRB NTPC\u00a0Mixtures & Alligations questions based on asked questions in previous exam papers very important for the Railway NTPC exam. Download RRB NTPC Previous Papers PDF Question 1:\u00a0An alloy A is made up of Zinc and […]<\/p>\n","protected":false},"author":41,"featured_media":31139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,31,1603,1601],"tags":[489,491,1637,1647,1619],"class_list":{"0":"post-31137","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-ntpc","11":"category-rrb-ntpc-je","12":"tag-railway-exam","13":"tag-rrb","14":"tag-rrb-exam","15":"tag-rrb-mocks","16":"tag-rrb-ntpc-2019"},"better_featured_image":{"id":31139,"alt_text":"Mixtures & Alligations Questions for RRB NTPC PDF","caption":"Mixtures & Alligations Questions for RRB NTPC PDF","description":"Mixtures & Alligations Questions for RRB NTPC PDF","media_type":"image","media_details":{"width":1200,"height":630,"file":"2019\/07\/fig-04-07-2019_12-20-41.jpg","sizes":{"thumbnail":{"file":"fig-04-07-2019_12-20-41-150x150.jpg","width":150,"height":150,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-150x150.jpg"},"medium":{"file":"fig-04-07-2019_12-20-41-300x158.jpg","width":300,"height":158,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-300x158.jpg"},"medium_large":{"file":"fig-04-07-2019_12-20-41-768x403.jpg","width":768,"height":403,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-768x403.jpg"},"large":{"file":"fig-04-07-2019_12-20-41-1024x538.jpg","width":1024,"height":538,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-1024x538.jpg"},"tiny-lazy":{"file":"fig-04-07-2019_12-20-41-30x16.jpg","width":30,"height":16,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-30x16.jpg"},"td_80x60":{"file":"fig-04-07-2019_12-20-41-80x60.jpg","width":80,"height":60,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-80x60.jpg"},"td_100x70":{"file":"fig-04-07-2019_12-20-41-100x70.jpg","width":100,"height":70,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-100x70.jpg"},"td_218x150":{"file":"fig-04-07-2019_12-20-41-218x150.jpg","width":218,"height":150,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-218x150.jpg"},"td_265x198":{"file":"fig-04-07-2019_12-20-41-265x198.jpg","width":265,"height":198,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-265x198.jpg"},"td_324x160":{"file":"fig-04-07-2019_12-20-41-324x160.jpg","width":324,"height":160,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-324x160.jpg"},"td_324x235":{"file":"fig-04-07-2019_12-20-41-324x235.jpg","width":324,"height":235,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-324x235.jpg"},"td_324x400":{"file":"fig-04-07-2019_12-20-41-324x400.jpg","width":324,"height":400,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-324x400.jpg"},"td_356x220":{"file":"fig-04-07-2019_12-20-41-356x220.jpg","width":356,"height":220,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-356x220.jpg"},"td_356x364":{"file":"fig-04-07-2019_12-20-41-356x364.jpg","width":356,"height":364,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-356x364.jpg"},"td_533x261":{"file":"fig-04-07-2019_12-20-41-533x261.jpg","width":533,"height":261,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-533x261.jpg"},"td_534x462":{"file":"fig-04-07-2019_12-20-41-534x462.jpg","width":534,"height":462,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-534x462.jpg"},"td_696x0":{"file":"fig-04-07-2019_12-20-41-696x365.jpg","width":696,"height":365,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-696x365.jpg"},"td_696x385":{"file":"fig-04-07-2019_12-20-41-696x385.jpg","width":696,"height":385,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-696x385.jpg"},"td_741x486":{"file":"fig-04-07-2019_12-20-41-741x486.jpg","width":741,"height":486,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-741x486.jpg"},"td_1068x580":{"file":"fig-04-07-2019_12-20-41-1068x580.jpg","width":1068,"height":580,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-1068x580.jpg"},"td_1068x0":{"file":"fig-04-07-2019_12-20-41-1068x561.jpg","width":1068,"height":561,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-1068x561.jpg"},"td_0x420":{"file":"fig-04-07-2019_12-20-41-800x420.jpg","width":800,"height":420,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41-800x420.jpg"}},"image_meta":{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}},"post":null,"source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/07\/fig-04-07-2019_12-20-41.jpg"},"yoast_head":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\n\n\n