SSC MTS 2025 · PYQ · Mixtures and Alligation · medium
A solution of milk and water contains 60% milk. How many litres of pure milk must be added to 40 litres of this solution to make the milk content 75%?
A.10 L
B.24 L✓ Correct
C.20 L
D.12 L
Explanation
Using alligation between 60% and 100% milk to reach 75%: ratio is 5:3 per 8 units; 40 litres corresponds to 40/5×3 = 24 litres of pure milk to be added.
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