A 60 L mixture contains milk and water in the ratio 4 : 1. How many litres of water must be added to make the ratio 1 : 1?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 36 L.
Milk = (4/5)×60 = 48 L
Water = (1/5)×60 = 12 L
Let x = water added.
48 : (12 + x) = 1 : 1
⇒ 48 = 12 + x
⇒ x = 36