A mixture of 75 litres contains milk and water in the ratio 2:1. How much more water should be added to the mixture to make the ratio of milk to water 1:2?
Show answer & explanation
Correct answer: C
Explanation
Given:
Total mixture = 75 L
Milk : Water = 2 : 1
Total ratio = 2 + 1 = 3
Milk = (2/3) × 75 = 50 L
Water = (1/3) × 75 = 25 L
Let x L of water be added.
New water = 25 + x
New ratio:
50 : (25 + x) = 1 : 2
2 × 50 = 25 + x
100 = 25 + x
x = 75 liters