A grocer mixes 12 kg of rice costing ₹45 per kg with 8 kg of rice costing ₹60 per kg. What is the cost price per kg of the mixture?

Explanation

1. 01

   Cost of the mixture = $12 \times 45 + 8 \times 60 = 540 + 480$ = ₹1,020.

2. 02

   Weight = $12 + 8 = 20$ kg.

3. 03

   Cost per kg = ₹$\frac{1020}{20}$ = ₹51.