A trader spends ₹600 on rice at ₹40 per kg and another ₹600 on rice at ₹60 per kg, and mixes the two. What is the price per kg of the mixture?

Explanation

1. 01

   Equal money buys unequal amounts: $\frac{600}{40} = 15$ kg and $\frac{600}{60} = 10$ kg.

2. 02

   So ₹1,200 buys 25 kg: $\frac{1{,}200}{25} = 48$ rupees per kg.