In 60 litres of mixture, milk and water are in 3 : 2. How much water to add to make it 1 : 1?

Question: In 60 litres of mixture, milk and water are in 3 : 2. How much water to add to make it 1 : 1?

Solution:
Find the quantity of milk and water in the initial mixture:
→ Total parts = 3 + 2 = 5 parts
→ Milk = (3/5) × 60 = 36 L
→ Water = (2/5) × 60 = 24 L

Let x liters of water be added.
New amount of water = 24 + x
Milk remains the same = 36 L

According to the question:
We want the final ratio to be 1:1, i.e.
→ Milk = Water
⇒ 36 = 24 + x
⇒ x = 36 − 24 = 12 L