Multiple choice

Several liters of milk are taken out from a 112 liters’ vessels full of milk and replace with water. This process repeated another one time. As a result, 63 liters’ milk is remaining on that vessels. How much of milk was taken out initially?

  1. 24 liter

  2. 28 liter

  3. 32 liter

  4. 23 liter

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Using the replacement formula twice: remaining milk = 112(1 - x/112)² = 63. Solving: (1 - x/112)² = 63/112 = 9/16, so 1 - x/112 = 3/4, giving x/112 = 1/4 and x = 28 liters. Option B is correct. This is the milk removed in each operation.