【SAT Practice】2013年6月30日SAT官方每日一题

2013-07-01 10:19:26 来源: Collegeboard 责编：楷维留学指南

楷维留学指南分享【SAT Practice】2013年6月30日SAT官方每日一题，希望对大家有所帮助！

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2013年6月30日SAT考试官方每日一题

考试题型: Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

Ten cars containing a total of people passed through a checkpoint. If none of these cars contained more than people, what is the greatest possible number of these cars that could have contained exactly people?

A. One

B. Two

C. Three

D. Four

E. Five

2013年6月30日SAT考试官方每日一题正确答案: D

解析:

It could not be true that each of the ten cars contained exactly people, as this would give a total of only . If nine of the cars contained exactly people, the remaining car could have no more than people, for a total of only . Continuing in the same way, a pattern develops. If eight of the cars contained exactly people, the remaining two cars could have no more than people each, for a total of only . If seven of the cars contained exactly people, the total number of people could be only . From the pattern, you can see that if four of the cars contained exactly people, and the remaining six cars contained the maximum of people, the total number would be , as given in the question. Therefore, at most four of the ten cars could have contained exactly people.