A kirana store mixes three grades of rice costing ₹30, ₹36 and ₹45 per kg in the ratio $2 : 3 : 1$. What is the cost of the mixture per kg?

Explanation

1. 01

   Cost of 6 kg = $2 \times 30 + 3 \times 36 + 1 \times 45 = 60 + 108 + 45 = 213$ rupees.

2. 02

   Cost per kg = $\frac{213}{6} = 35.50$ rupees.