Read the information given below and answer the question below it. A vessel has 80 liter of solution of milk and water having -----------% milk. --------- litre of water should be added to the solution to make the water 52 % in the solution

Let initial milk percentage = m%. Initial milk = (m/100) × 80 = 0.8m liters, water = 80 - 0.8m liters. After adding x liters water: total = 80 + x, water = 80 - 0.8m + x. Water should be 52%: (80 - 0.8m + x)/(80 + x) = 0.52. Testing option C: m = 60, x = 20. Initial milk = 48 liters, water = 32 liters. After adding 20 liters water: total = 100, water = 52 liters, which is exactly 52%. This satisfies the condition.