Topic : Mixture & Alligation PYQ's 

Q1. Two glasses of equal volume are respectively half and three-fourths filled with milk. They are then filled to the brim by adding water. Their contents are then poured into another vessel. What will be the ratio of milk to water in this vessel?

[CSAT 2012]

(a) 1:3

(b) 2:3

(c) 3:2

(d) 5:3

Q2. Two equal glasses of same type are respectively         &   full of milk. They are then filled up with water and the contents are mixed in a pot. What is the ratio of milk and water in the pot? [CSAT 2015]

(a) 7:17

(b) 1:3

(c) 9:21

(d) 11:23

Q3. 30 g of sugar was mixed in 180 ml water in a vessel A, 40 g of sugar was mixed in 280 ml of water in vessel B and 20 g of sugar was mixed in 100 ml of water in vessel C. The solution in vessel B is. [CSAT 2016]

(a) Sweeter than that in C.

(b) Sweeter than that in A.

(c) As sweet as that in C.

(d) Less sweet than that in C.

Q4. The monthly average salary paid to all the employees of a company was Rs. 5000. The monthly average salary paid to male and female employees was Rs. 5200 and Rs. 4200 respectively. Then the percentage of males employed in the company is [CSAT 2016]

(a) 75%

(b) 80%

(c) 85%

(d) 90%

Q5. There is a milk sample with 50% water in it. If    of this milk is added to equal amount of pure milk, then water in the new mixture will fall down to [CSAT 2017]

(a) 25%

(b) 30%

(c) 35%

(d) 40%

Q6. A vessel full of water weighs 40 kg. If it is one- third filled, its weight becomes 20 kg. What is the weight of the empty vessel? [CSAT 2020]

(a) 10 kg

(b) 15 kg

(c) 20 kg

(d) 25 kg

Q7. Consider the following data:

What is the value of x in the above table? [CSAT 2020]

(a) 7.8

(b) 7.6

(c) 7.4

(d) 7.2

Q8. A bottle contains 20 litres of liquid A. 4 litres of liquid A is taken out of it and replaced by same quantity of liquid B. Again 4 litres of the mixture is taken out and replaced by same quantity of liquid B. What is the ratio of quantity of liquid A to that of liquid B in the final mixture? [CSAT 2020]

(a) 4:1

(b) 5:1

(c) 16:9

(d) 17:8

Q9. There are two containers X and Y. X contains 100 ml of milk and Y contains 100 ml of water. 20 ml of milk from X is transferred to Y. After mixing well, 20 ml of the mixture in Y is transferred back to X. If m denotes the proportion of milk in X and n denotes the proportion of water in Y, then which one of the following is correct? [CSAT 2022]

(a) m = n

(b) m > n

(c) m < n

(d) Cannot be determined due to insufficient data.

Q10. What percent of water must be mixed with honey so as to gain 20% by selling the mixture at the cost price of honey?  [CSAT 2024]

(a) 20%

(b) 10%

(c) 5%

(d) 4%

ANSWER KEY

1. D
2. A
3. D
4. B
5. A
6. A
7. A
8. C
9. A
10. A