Question
A shopkeeper mixes two types of rice, costing $30 per kg
and $50 per kg, in the ratio 3:2. He sells the mixture at $45 per kg. What is his percentage profit or loss?Solution
Cost price of mixture per kg = (3 Ć 30 + 2 Ć 50) / (3 + 2)Ā Cost price per kg = (90 + 100) / 5 = $38Ā Selling price = $45 per kgĀ Profit = 45 - 38 = $7Ā Profit percentage = (7 / 38) Ć 100 ā 18.42%.
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