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标题: 这道题读的迷迷糊糊 [打印本页]

作者: yuexia    时间: 2002-9-15 09:26     标题: 这道题读的迷迷糊糊

是一道xdf数学分册上的题:

On a purchase of $120, a store offered a payment plan consisting of a $20 down payment and 12 monthly payments of $10 each. What percent of the purchase price, to the nearest tenth of a percent, did the customer pay in interest by using this plan?

(A) 16.7%
(B) 30%
(C) 75.8%
(D) 106.7%
(E) 107.5%
作者: gwxd    时间: 2002-9-15 10:58

当然是A ,这个很简单呀
作者: yuexia    时间: 2002-9-16 02:51

我也在想是用利息$20去除以价格$120,我是对于后一句话中 to the nearest tenth of a percent 的意思不明白。
作者: raonx    时间: 2002-9-16 06:01

只取到百分之某数的小数点的十分位
作者: yuexia    时间: 2002-9-16 12:20

哦,谢了,呵呵!




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