Question
A shopkeeper mixes two varieties of tea, one costing
₹300 per kg and the other ₹450 per kg, in the ratio 5:3. He sells the mixture at ₹400 per kg. Find his profit percentage.Solution
Let the quantity of the first variety (₹300/kg) be 5 kg and the second variety (₹450/kg) be 3 kg. Cost price of the mixture = (5 × 300 + 3 × 450) / 8 = (1500 + 1350) / 8 = ₹356.25 per kg. Selling price = ₹400 per kg. Profit percentage = [(400 − 356.25) / 356.25] × 100 ≈ 12.29%. Ans. b
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