Ratio and Proportion Practice Test 3

Question : 18 of 40

Marks: +1, -0

One man adds 3 litres of water to 12 litres of milk and another 4 litres of water to 10 litres of milk. What is the ratio of the strenghts of the milk in the two mixtures?

15 : 25
25 : 28
28 : 25
None of these

Validate

Solution:

Strength of milk in the first mixture

= 12/ {12 + 3} = 12/ 15

Strength of milk in the second mixture

= 10/ {10 + 4} = 10/ 14

∴ The ratio of their strengths

= 12/ 15: 10/ 14

= 12 × 14 : 15 × 10

= 28 : 25

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