How much water (in ml) should be added to 300 ml of a 75% milk and water mixture so that it becomes a 45% milk and water mixture?
Explanation:
Amount of milk initially = 300 × 75%
Let x liters of water is added.
Amount of milk finallly = (300 + x) × 45%
Amount of milk finallly = Amount of milk initially ∴ (300 + x) × 45% = 300 × 75% ⇒ 45x = 300 × 30 ⇒ x = 200 liters
Hence, option (d).
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