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Q 1.

In a mixture of milk and water, there is only 26% water. After replacing the mixture with 7 liters of pure milk , the percentage of milk in the mixture become 76%. The quantity of mixture is ?

A)  65 liters
B)  91 liters
C)  38 liters
D)  None of these

Explanation:

MCQ Type: Alligation & Mixture, Aptitude

Q 2.

In the 75 liters of mixture of milk and water, the ratio of milk and water is 4:1. The quantity of water required to make the ratio of milk and water 3:1 is ?

A)  1 litre
B)  3 litre
C)  4 litres
D)  5 litres

Explanation:

MCQ Type: Alligation & Mixture, Aptitude

Q 3.

In a mixture of milk and water the proportion of water by weight was 75%. If in 60 gm of mixture 15 gm water was added, what would be the percentage of water ? (Weight in gm)

A)  80%
B)  70%
C)  75%
D)  62%

Explanation:

MCQ Type: Alligation & Mixture, Aptitude

Q 4.

A sum of Rs.118 was divided among 50 boys and girls such that each boy received Rs.2.60 and each girl Rs.1.80. Find the number of boys and girls ?

Average money received by each = 118/50 = Rs. 2.36

Therefore, Ratio of No. of boys and girls = 56 : 24 = 7 : 3

Therefore, Number of boys = 50 x (7/10) = 35

Number of girls = 50 - 35 = 15

MCQ Type: Alligation & Mixture, Aptitude

Q 5.

From  a container of wine, a thief has stolen 15 liters of wine and replaced it with same quantity of water. He again repeated the same process. Thus in three attempts the ratio of wine and water became 343:169. The  initial amount of wine in the container was:

A)  75 liters
B)  100 liters
C)  150 liters
D)  120 liters

Explanation:

MCQ Type: Aptitude, Alligation & Mixture

Q 6.

The ratio of water and alcohol in two different containers is 2:3 and 4:5. In what ratio we are required to mix the mixtures  of two containers in order to get the new mixture in which the ratio of alcohol and water be 7:5?

A)  7:3
B)  5:3
C)  8:5
D)  2:7

Explanation:

MCQ Type: Alligation & Mixture, Aptitude

Q 7.

A vessel is filled with liquid, 3 parts of which are water and 5 parts of syrup. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?

A)  1/3
B)  1/4
C)  1/5
D)  1/7

Explanation:

MCQ Type: Alligation & Mixture, Aptitude

Q 8.

A milk man sells the milk at the cost price but he mixes the water in it and thus he gains 9.09%. The quantity of water in the mixture of 1 liter is ?

A)  83.33 ml
B)  90.90 ml
C)  99.09 ml
D)  Can't be determined

Explanation:

MCQ Type: Alligation & Mixture, Aptitude

Q 9.

The average weight of boys in a class is 30 kg and the average weight of girls in the same class is 20kg. If the average weight of the whole class is 23.25 kg, what could be the possible strength of boys and girls respectively in the same class?

A)  14 and 16
B)  13 and 27
C)  17 and 27
D)  None of these

Explanation:

MCQ Type: Alligation & Mixture, Aptitude

Q 10.

A vessel contains 20 liters of a mixture of milk and water in the ratio 3:2. 10 liters of the mixture are removed and replaced with an equal quantity of pure milk. If the process is repeated once more, find the ratio of milk and water in the final mixture obtained ?

A)  5:3
B)  1:4
C)  4:1
D)  9:1