Question

In an 80-litre mixture of milk and water, the ratio of milk to water is 7 : 3. To make this ratio 2 : 1, how many litres of water should be added?

• A. 5 litres
• B. 6 litres
• C. 4 litres
• D. 10 litres

Answer 1

The Correct Option is D

In the original mixture, milk is 7/10 × 80 = 56 litres and water is 80 − 56 = 24 litres. To achieve a 2 : 1 ratio, we set up the equation 56/(24 + x) = 2. Solving for x, we find x = 10 litres.