Question

In a mixture of 60 litres, milk and water are in the ratio 2 : 1. Find the quantity of water to be added to make the ratio 4 : 3

• A. 12 liters
• B. 10 liters
• C. 15 liters
• D. 20 liters

Answer 1

Answer:

B. 10 liters

Solution: Given: A Given mixture of 60 liters in which milk: water = 2: 1 Let us assume that X liter of water is added Calculation: ⇒ In the Mixture of 60 liter = milk + water = 2 + 1 unit = 3 unit ⇒ 3 unit = 60 liter ⇒ 1 unit = 20 liter ⇒ Milk: Water = 2 × 20: 1 × 20 = 40 : 20 Now as given to make the ratio of Milk: Water = 4 : 3 by adding X liter of water ⇒ 40/(20 + X ) = 4/3 ⇒ 40 × 3 = 4 × ( 20 + X ) ⇒ 120 = 80 + 4X ⇒ 4X = 40 ∴ X = 10