In a mixture of 35 litres, the ratio of milk to water is 2 : 3. If this ratio is to be 1 : 3, then what quantity of water needs to be added?
Show answer & explanation
Correct answer: D
Explanation
Given:
Total mixture = 35 L
Milk : Water = 2 : 3
According to the formula:
Quantity = Total × (Part / Total Parts)
Milk = 35 × 2/5 = 14 L
Water = 35 × 3/5 = 21 L
Let's assume x L of water is added.
New quantity of water = 21 + x
New ratio:
14 : (21 + x) = 1 : 3
3 × 14 = 21 + x
42 = 21 + x
x = 21 L