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Alligation and Mixture aptitude questions and answers - Page 1

1. If 20 liters of water is added to a tub already filled with 120 liters of diluted milk, the concentration of milk in the tub will be 80%. What is the concentration of milk in the tub before adding water to the tub?

A. 88.66%

B. 90%

C. 93.33%

D. 96%

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2. The ratio of milk and water in a mixture is 2 : 3 and the ratio of water to milk in another mixture is 3 : 4. If 70 liters of each type of milk is added to 100 lts of pure milk, what will be the ratio of milk and water now ?

A. 3 : 4

B. 4 : 5

C. 5 : 2

D. 7 : 3

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3. An alloy contains zinc and tin in the ratio 3 : 4. Another alloy contains zinc and silver in the ratio 4 : 3. If both the alloys are melted and mixed in equal ratio, what will be the ratio of zinc and tin in the new alloy ?

A. 4 : 3

B. 7 : 4

C. 1 : 1

D. 3 : 1

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4. A container contains 40 litres of milk. From this container 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?

A. 26.34 litres

B. 27.36 litres

C. 28 litres

D. 29.16 litres

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5. There are two bottles A and B, B is twice of A size. A is half full of milk while B is one quarter full of milk. Both bottles are filled with water and the contents are poured into a third bottle C. What portion of bottle C mixture is milk?

A. 1/2

B. 1/3

C. 1/4

D. 2/3

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