數學題幫忙列式及計算

2007-11-17 4:05 am

After paying $65 for books, Jack dfound that 48 % of his money was left. How much did he have at first?

回答 (4)

2007-11-17 4:12 am

✔ 最佳答案

Let $x be the money Jack had at first.
x(1-48%) = 65
x*52% = 65
x=125
therefore,Jack had $125 at first

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2007-11-17 4:18 am

你可以用方程....可以普通計
當然普通計係易d喇

Jack had=65除(1-48%)
=65除(1-0.48)
=65除0.52
=$125

參考: 自己

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2007-11-17 4:12 am

He had
=65除(1-48%)
=$125

參考: myself

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2007-11-17 4:11 am

65除0.48就可以

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