1. The owner of a light shop bought a crystal light for $x. He raised the marked price of the light 60% higher than the cost price. Later it was sold to a customer at a discount of 25%.
Find the profit per cent made by the owner.
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數學問題..Profit per cent
2011-01-24 12:17 am
回答 (1)
2011-01-24 12:25 am
✔ 最佳答案
Profit %= [(Selling price - Cost price) / Cost price] * 100%= [x(1+60%)(1 - 25%) - x) / x] * 100%= [(1.2x - x) / x] * 100%= (0.2x / x) * 100%= 0.2 * 100%= 20%
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