6 kg of rice at ₹50 per kg is mixed with 4 kg at ₹75 per kg. At what price per kg must the mixture be sold to make a 25% profit?

Explanation

1. 01

   Cost of the mixture: $\frac{300 + 300}{10} = 60$ rupees per kg.

2. 02

   For 25% profit: $60 \times 1.25 = 75$ rupees per kg.