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标题: 一道prep [打印本页]

作者: yummysteve 时间: 2007-12-26 19:06
标题: 一道prep
85. 9735-!-item-!-187;#058&006716

At the end of t85. 9735-!-item-!-187;#058&006716

At the end of the first quarter, the share price of a certain mutual fund was 20 percent higher than it was at the beginning of the year. At the end of the second quarter, the share price was 50 percent higher than it was at the beginning of the year. What was the percent increase in the share price from the end of the first quarter to the end of the second quarter?

(A) 20%

(B) 25%

(C) 30%

(D) 33%

(E) 40%選B
我怎麼算30?

作者: forwhat 时间: 2007-12-26 19:10

设年初为S

第一季度末则为 1.20S

第二季度末为1.50S

第一季度道第二季度增长百分比=（1.5S-1.2S）/ 1.2S= 1/4 = 25%

作者: chonheinrich 时间: 2007-12-26 19:10

设年初价格100，第一季末120，第二季末150.

（150-120）/120=0.25

选B。

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