A mixture contains milk and water in the ratio 3 : 5. If the total quantity is 40 litres, how much milk should be added to make the ratio 1 : 1?

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Accepted Answer

1. **Milk part**: the milk is $	frac{3}{8}$ of 40, so $	frac{3}{8}	imes40=15$ L.

2. **Water part**: $40-15=25$ L.

3. Let added milk be $x$. For ratio 1:1 we need $15+x=25$.

4. Solve: $x=10$ L.

FINAL_ANSWER: b

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