请教: 2道数学题

gu_zhenzhen

Prep Test1_8:

What fraction of this year's graduating students at a certain college are males?

(1) Of this year's graduating students, 33% of the males and 20% of the females transferred from another college.

(2) Of this year's graduating students, 25% transferred from another college.

A Statement (1) alone is sufficient, but (2) alone is not sufficient.

B Statement (2) alone is sufficient, but (1) alone is not sufficient.

C Both statments together are sufficient, but neither statemetn alone is sufficient.

D Each alone is sufficient.

E (1) and (2) together are not sufficient.

[Answer C]

31.

Alice's take-home pay last year was the same each month, and she saved the same fraction of her take-home pay each month.  The total amount of money that she had saved at the end of the year was 3 times the amount of that portion of her monthly take-home pay that she did not save.  If all the money that she saved last year was from her take-home pay, what fraction of her take-home pay did she save each month?

A 1/2

B 1/3

C 1/4

D 1/5

E 1/6

[Answer D]

Thanks.

gu_zhenzhen

明白了,十分感谢