GWD题；enrollment in city college

缺氧 · 发表于 2011-1-25 01:12:47

Enrollment in City College in 1980 was 83? percent of enrollment in 1990. What was the percent increase in the collegeâ?s enrollment from 1980 to 1990?

A. 10%
B. 16?%
C. 20%
D. 25%
E. 183?%
答案选C，不知道为什么，求解析，谢谢

fishsquare · 发表于 2011-1-25 01:23:54

E1980=83?%E1990
SO, E1990=120%E1980
1980到1990E涨了20%

GWD题；enrollment in city college

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