1、Amy’s grade was the 90th percentile of the 80 grades for her class. Of the 100 grades from another class, 19 were higher than Amy’s and the rest were lower. If no other grade was the same as Amy’s grade, then Amy’s grade was what percentile of the two class combined?
A 72nd B 80thC 81stD 85thE 95th
不太明白题目是什么意思？
2、A certain library accesses fines for overdue books as follows. On the first day that a book is overdue, the total fine is $0.10. For each additional day that the book is overdue, the total fine is either increased by $0.30 or doubled, whichever results in the lesser amount. What is the total fine for a book on the fourth day it is overdue?
楼上的解释应该是不对的。按照第二题的原文 For each additional day that the book is overdue, the total fine is either increased by $0.30 or doubled, whichever results in the lesser amount. 我们可以发现 每天增长的就是TOTAL FINE 并不是说每天变化的是当天的罚金 然后最后把它加总
楼上的解释应该是不对的。按照第二题的原文 For each additional day that the book is overdue, the total fine is either increased by $0.30 or doubled, whichever results in the lesser amount. 我们可以发现 每天增长的就是TOTAL FINE 并不是说每天变化的是当天的罚金 然后最后把它加总
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发表于 2010-9-14 19:18:54
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