In a mixture of 60 liters, the ratio of milk and water is 2:1. What amount of water must be added to make the ratio of milk and water as 1:2?

🧠 Explanation (Math):

Given: 60 L with milk:water $=2:1Rightarrow(40,20)$; make $1:2$
Step 1: Let added water $=w$.
Step 2: $40:(20+w)=1:2Rightarrow80=20+wRightarrow w=60$.
Final Answer: 60