Question

A 60 liter mixture of milk and water contains 10% water. How much water must be added to make water 20% in the mixture?

• A. 8 liters
• B. 7.5 liters
• C. 7 liters
• D. 6.5 liters

Answer 1

Answer:

B. 7.5 liters

The mixture has 10% water, so the milk would be 90% of 60 liters. Milk = 54 liters Water = 60 - 54 = 6 liters water to be added = x liters 6+x/ 60+x =1/5 30 + 5x = 60+x x =7.5