Ratio and Proportion Practice Test 4

Question : 38 of 40

Marks: +1, -0

A vessel contains water and milk in the ratio 7 : 5. If 6 litres of milk is added to the mixture, the ratio becomes 9 : 11. Find the quantity of water in the mixture.

12.81 litres
12 litres
11.81 litres
10 litres
8.4 litres

Validate

Solution:

Let the quantity of water and milk be 7x and 5x respectively.
Then,

{7x}/{5x+6}=9/11

77x = 45x + 54

32x = 54

x = 1.68

Quantity of water = (7 × 1.68) litres = 11.81 litres

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