求教：数学GWD-5

ursula1102 · 发表于 2010-9-9 12:56:17

Q28:

Last Sunday a certain store sold copies of Newspaper A for $1.00 each and copies of Newspaper B for $1.25 each, and the store sold no other newspapers that day.If r percent of the store’s revenues from newspaper sales was from Newspaper A and if p percent of the newspapers that the store sold were copies of newspaper B, which of the following expresses r in terms of p?

A.100p / (125 – p)

B.150p / (250 – p)

C.300p / (375 – p)

D.400p / (500 – p)

E.500p / (625 – p)

答案：D，怎么算都没有答案呢~

Q33:
Enrollment in City College in 1980 was 83? percent of enrollment in 1990.What was the percent increase in the college’s enrollment from 1980 to 1990?

A.10%
B.16?%
C.20%
D.25%
E.183?%
答案： C，我算是1- 83 1/3% 除以 83 1/3%, 可是没答案呢~

Q33:
Enrollment in City College in 1980 was 83? percent of enrollment in 1990.What was the percent increase in the college’s enrollment from 1980 to 1990?

A.10%
B.16?%
C.20%
D.25%
E.183?%
答案： C，我算是1- 83 1/3% 除以 83 1/3%, 可是没答案呢~

doreendu0809 · 发表于 2010-9-9 13:02:02

Q33:
Enrollment in City College in 1980 was 83? percent of enrollment in 1990.What was the percent increase in the college’s enrollment from 1980 to 1990?

A.10%
B.16?%
C.20%
D.25%
E.183?%

算法没错～是20%啊～

求教：数学GWD-5

所属分类: GMAT考试

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