PP-T2-PS-Q148

[aqboy[origen]]

148.

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 grades of the two classes combined?

(A) 72nd
(B) 80th
(C) 81st
(D) 85th
(E) 92nd

ANS:D

這題看不懂@@~ 幫忙一下~感謝~~

[aqboy[origen]]

看懂了,okok 下次會記得註明 謝謝