# MCQ on Ratio and Proportion

**11-If A:B=2:5 and B:C=4:1, then find A:B:C**

(A) 2:9:1

(B) 4:18:3

(C) 4:9:2

(D) 8:20:5

**12- If 0.75:x::5:8. Then x is equal to**

(A) 1.15

(B) 1.20

(C) 1.22

(D) 1.28

**13-A bag contains one rupee, 50-paise and 25 paise coins in the ratio 5:6:7. If the total amount is Rs. 390, find the number of coins of each kind**

(A) 200, 260, 220

(B) 240, 200, 260

(C) 200, 240, 280

(D) 260, 220, 200

**14- Weekly income of two persons are in the ratio of 7:3 and their weekly expenses are in the ratio of 5:2. If each of them saves Rs. 300 per week, then the weekly income of the first person is**

(A) Rs. 4,400

(B) Rs. 5,200

(C) Rs. 6,300

(D) Rs. 7,500

**15-If A : B = 2 : 3, B : C = 4 : 5, C : D = 6 : 7 then find A : B : C : D**

(A) 16 : 22 : 20 : 35

(B) 16 : 24 : 15 : 35

(C) 16 : 24 : 30 : 35

(D) 18 : 24 : 30 : 35

**16-If 30% of (B-A) is equal to 18% of (A+B) then the ratio A:B is equal to**

(A) 1:2

(B) 1:3

(C) 1:4

(D) 3:1

**17-30% of x is equal to 60% of y the x : y is**

(A) 1:2

(B) 2:1

(C) 1:3

(D) 3:1

**18-20 litres of a mixture contain milk and water in the ratio 5:3. If 4 litres of this mixture are replaced by 4 litres of milk, the ratio of milk to water in the new mixture will become**

(A) 2:1

(B) 1:2

(C) 7:3

(D) 8:3

**19-If x : y = 3 : 5 then (5x + 3y) : (15x – 2y) is**

(A) 1 : 5

(B) 5 : 1

(C) 6 : 7

(D) 7 : 6

**20-A mixture contains alcohol and water in the ratio 4 : 3. If five litres of water is added to the mixture, the ratio becomes 4 : 5. Find the quantity of alcohol in the given mixture.**

(A) 5 liters

(B) 7.5 liters

(C) 10 liters

(D) 12.5 liters

**ANSWERS:**

**11-(D), 12-(B), 13-(C), 14-(C), 15-(C), 16-(C), 17-(B), 18-(C), 19-(C), 20-(C)**