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標題:
發問:
Mary sells an electric heater at $1380 and the profit per cent is 15%. b) If she reduces the selling price by 55%,find her loss per cent.
最佳解答:
The cost(成本) of the electric heater: $1380÷(1+15%) =$1200 The selling price(售價) of the electric heater: $1380 X 55% =759 (1200-759)/1200 X 100% =36.75% ∴Her loss 36.75%.
其他解答:
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S.1 Maths發問:
Mary sells an electric heater at $1380 and the profit per cent is 15%. b) If she reduces the selling price by 55%,find her loss per cent.
最佳解答:
The cost(成本) of the electric heater: $1380÷(1+15%) =$1200 The selling price(售價) of the electric heater: $1380 X 55% =759 (1200-759)/1200 X 100% =36.75% ∴Her loss 36.75%.
其他解答:
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