SAT I 每日一问:2013年10月28日
作者:沪江英语
来源:CollegeBoard
2013-10-29 09:45
The correct answer is D
Explanation
The students who receive A’s, B’s, and C’s account for + + of the students, that is, . This leaves of the students receiving D’s. You know that 10 students receive D’s, so 10 is of the total. This means that the total number of students is 10 times 20, or 200.
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