Question
A trader blends two types of rice, one costing ₹60 per
kg and the other ₹80 per kg, in a 3:5 ratio. He sells the mixture at ₹75 per kg. What is his profit or loss percentage?Solution
Cost of 1 kg of the mixture = (3 × ₹60 + 5 × ₹80) ÷ (3 + 5) = (₹180 + ₹400) ÷ 8 = ₹580 ÷ 8 = ₹72.5. Selling price = ₹75. Profit or loss percentage = [(75 - 72.5) ÷ 72.5] × 100 = 3.45%. Answer: c) 3.45% profit.
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