今天开始看的OG 做test的时候第一题就卡住了啊。。。求各位大神帮忙啊。。。
Last month a certain music club offered a discount to
preferred customers. After the first compact disc
purchased, preferred customers paid $3.99 for each
additional compact disc purchased. If a preferred
customer purchased a total of 6 compact discs and
paid $15.95 for the first compact disc, then the dollar
amount that the customer paid for the 6 compact
discs is equivalent to which of the following?
这个是什么意思啊？没明白怎么回事 答案也没看明白。。。作者: nobody910 时间: 2012-10-18 21:25
