[求助]数学菜鸟来问数学题~

katherine8110

数学很烂，今天刚开始看OG就出现问题了~

OG75. Leona bought a 1-year, $10,000 certificate of deposit that paid interest at an annual rate of 8 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity?

不是很明白这道题目的意思~

Data Sufficiency:

OG7. What percent of a group of people are women with red hair?

1. Of the women in the group, 5 percent have red hair.

2. Of the men in the group, 10 percent have red hair.

我想选A, 因为觉得A与题目表达的意思一样~

各位大侠帮帮忙~呵呵~

sinadragon

QUOTE:

数学很烂，今天刚开始看OG就出现问题了~

OG75. Leona bought a 1-year, $10,000 certificate of deposit that paid interest at an annual rate of 8 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity?

不是很明白这道题目的意思~

题目意思是：Leona有$10,000 ，存1年定期，年利率为8%，半年期复利，问利息共有多少？

sinadragon

QUOTE:

Data Sufficiency:

OG7. What percent of a group of people are women with red hair?

1. Of the women in the group, 5 percent have red hair.

2. Of the men in the group, 10 percent have red hair.

我想选A, 因为觉得A与题目表达的意思一样~

题目问某群人中，红头发的女性占几分之几？

(1) 女性中，红头发的占5%。---> 男性或此人群的人数未知，所以不充分