Mixture and Alligation - Quantitative Aptitude Questions and Answers

This section focuses on "Mixture and Alligation" of Quantitative Aptitude. These Multiple Choice Questions (mcq) should be practiced to improve the Quantitative Aptitude skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. In what ratio should a shopkeeper mix two types of rice, one costing 40 rupees/kg and another costing 20 rupees/kg to get a rice variety costing 28 rupees/kg .

A. 3:2
B. 2:3
C. 4:3
D. 2:7

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2. In what ratio must water be mixed with milk costing Rs.30 per litre in order to get a mixture worth of Rs.18 per litre?

A. 1:3
B. 2:3
C. 4:3
D. 3:2

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3. In 1 kg mixture of iron and carbon, 40% is carbon. How much iron should be added so that the proportion of carbon becomes 20%.

A. 1KG
B. 2KG
C. 3KG
D. 4KG

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4. 5 litre of coconut oil is added to 15 litre of a solution containing 40% of groundnut oil. The percentage of groundnut in the new mixture is:

A. 20%
B. 30%
C. 40%
D. 50%

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5. In what ratio must coffee powder worth Rs. 40 per kg be mixed with coffee powder worth Rs. 45 a kg such that by selling the mixture at Rs. 48.40 a kg ,there can be a gain 10%?

A. 1:2
B. 2:3
C. 1:4
D. 4:1

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6. How many litres of a 36 litre mixture containing milk and water in the ratio of 4 : 6 be replaced with pure milk so that the resultant mixture contains milk and water in equal proportion?

A. 4
B. 6
C. 8
D. 10

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7. 12 litres are drawn from a cask full of wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of the water is 81 : 256. How much wine did the cask originally hold?

A. 40
B. 44
C. 48
D. 52

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8. Vessel A contains milk and water in the ratio 3:2. Vessel B contains milk and water in the proportion 4:5. In what proportion should quantities be taken from A & B to form a mixture in which milk and water are in the ratio 7:2?

A. 8:15
B. 15:8
C. 7:15
D. 15:7

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9. In what ratio must a person mix three kinds of musted seeds costing Rs.65/kg, Rs.70/kg and Rs.105 /kg so that the resultant mixture when sold at Rs.96/kg yields a profit of 20%?

A. 40:8:25
B. 8:25:40
C. 25:8:40
D. 25:40:8

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10. A can contains a mixture of two liquids A and B is the ratio 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?

A. 10
B. 20
C. 21
D. 14

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