GWD-1-19涛涛

Q19. a total of $60,000 was invested for one year, but of this amount earned simple annual interst at rate of x percent per year, and the rest earned simple annual interest at the rate of y percent per year.  If the total interst earned by the $60,000 for that year was $4080, what is the value for x?

1.x=(3/4)y

2.the ratio of the amount that earned interst at the rate of x percent per year to the amount that earned interest at the rate of y percent per year was 3 to 2

Answer Key: C

说实话，我不是和明白这道题，this amount 和the rest都代表什么呢？谢谢

好像应该是C，有待高人指点，

题干上面 of this amount earned simple annual interst at rate of x percent 有点搞， 看了后面2的条件，好像是说不同amount按不同rate来算。然后总共60，000的amount，可能分成两个amount标准，就会有一个算x rate的，剩余的 算 y rate。 题干那段不懂啊  

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