懂英语和数学的来!求算式!A model ship is sold for $225 at a loss of 25%.How much does it cost?

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懂英语和数学的来!求算式!A model ship is sold for $225 at a loss of 25%.How much does it cost?
懂英语和数学的来!求算式!
A model ship is sold for $225 at a loss of 25%.How much does it cost?

懂英语和数学的来!求算式!A model ship is sold for $225 at a loss of 25%.How much does it cost?
一个模型船卖225美元,亏损了25%.它成本为多少钱?
225÷(1-25%)=300
方程:设成本为X元,依题意,得
(1-25%)X=225
X=300

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