A mixture contains milk and water in the ratio 4 : 3. If 5 liters of water is added, the ratio becomes 4 : 5. Find the quantity of milk in the mixture.
A
10 liters
B
15 liters
C
12 liters
D
20 liters
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Correct Answer 10 liters
Explanation
Milk is constant (4 units). Water changes from 3 to 5 units (+2 units). 2 units = 5 liters => 1 unit = 2.5 liters. Milk (4 units) = 4 * 2.5 = 10 liters.