Multiple choice

A milkman has three containers A, B and C. The ratio of milk and water in containers A, B and C respectively are 3:1, 4:1 and 5:1. Each container contains 60 liter mixture of milk and water. The Milkman boiled the milk one by one container, so 20% of water evaporated from each container. If the milkman mixed all mixtures in a container D, then what is the ratio of milk and water in container D?

  1. $615: 148$
  2. $715: 147$
  3. $715: 148$
  4. $715: 142$
  5. $515: 148$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Container A has 45L milk and 15L water. After 20% evaporation, water becomes 12L. Container B has 48L milk and 12L water. After 20% evaporation, water becomes 9.6L. Container C has 50L milk and 10L water. After 20% evaporation, water becomes 8L. Total milk = 143L, total water = 29.6L. Ratio = 143:29.6 = 715:148.

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