gwd 9 9

Kath1985 · 发表于 2011-6-9 19:52:40

9-Q9:

In an art gallery, 25 percent of the art pieces on display were photographs.If 12 percent of the photographs were black-and-white photographs, what percent of the art pieces on display were black-and-white photographs?

A.3%

B.7%

C.13%

D.30%

E.37%
是A 腦筋打結了怎麼求呢

藜芦 · 发表于 2011-6-10 19:39:15

……这题就拿12%乘以25%就可以了啊……

gwd 9 9

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