8 kg of sugar at ₹40 per kg is mixed with 12 kg at ₹45 per kg. What is the price per kg of the mixture?

Explanation

1. 01

   Total cost: $8 \times 40 + 12 \times 45 = 860$ rupees, for 20 kg.

2. 02

   Mean price $= \frac{860}{20} = 43$ rupees per kg.