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标题: GWD3-24 [打印本页]

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作者: 52element    时间: 2008-8-28 11:04
标题: GWD3-24

Q24:

A glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a twenty-day period.  What percent of the original amount of water evaporated during this period?

 

A.    0.002%

B.     0.02%

C.     0.2%

D.    2%

E.     20%

Answer: D

 

是用等比数列死算出来吗？

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作者: tt923    时间: 2008-8-28 13:08
说的是每天蒸发0.01盎司，直接乘以20就得出来了，不要想太多

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