If Type 1 rice costs Rs. 15 per kilogram and Type 2 rice costs Rs. 20 per kilogram, what is the price per kilogram when these two types are blended in the ratio 2:3?

Explanation

To find the price per kg of the mixture, multiply each type's price by its ratio part, add the results, then divide by the total parts: (15 × 2 + 20 × 3) ÷ (2 + 3) = (30 + 60) ÷ 5 = 90 ÷ 5 = Rs. 18.