确认几道题目

smiling_cd

做prep模考的时候的题，

1）a certain group of car dealerships agreed to donate  x dollars to a red cross chapter for each car sold during a 30-day period, what wat the total amount that was expect to be donated?

1) a total of 500 cars were ecpected to sold

2)60 more cars were sold than expect, so that the total amount actually donates was $28000

这道题我觉得明显是E， each can。从1）可知是500x， 从2）可知是28000-60x

可是prep的答案是C both

不解~~

今天居然错了10道数学题，晕啊，而且连一向太粗心的我，这次错的里面好多都不是粗心，是属于 陷阱太严重，哎，如果按照prep的数学来看，已经太狡猾了