Quantitative Aptitude • Ratio, Average & MixtureHard
A 360-litre mixture contains milk and water in the ratio 7 : 3. How many litres of water must be added to make the ratio 3 : 2?
A. 144 litres
B. 60 litres✓ Correct Answer
C. 168 litres
D. 120 litres
💡 Solution & Explanation
Milk = 360 × 7/10 = 252 litres and water = 108 litres. Adding water does not change the milk. For milk : water = 3 : 2, the water must be 252 × 2/3 = 168 litres. So add 168 − 108 = 60 litres of water.
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