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标题: [求助]gwd 3-9 [打印本页]

作者: yuqinggong 时间: 2006-11-19 07:05 标题: [求助]gwd 3-9

If 5x = 2y and xy ≠ 0, then is what percent of y?

A. 2%

B. 4%

C. 10%

D. 40%

E. 50%

Answer: D

Can anyone solve this for me? Is the quesiton compete? I don't understand what it really mean~~~

作者: dreadpower 时间: 2006-11-20 06:36

是说x是y的百分之几, 因为5x = 2y, x/y = 2/5, 所以是40%

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