GWD 02-Q10

[sugarcane]

on a certain date,Hannah ivested $5000 at x percent simple annual interest and a different amount at y percent simple annual interest .What amount did Hannah invest at y percent simple annaul interest?
(1) The total amount of interest earned by Hannah's due investment in one year was $900
(2) Hannah invested the $5000 at 6 percent simple annaul interest.

答案為E
我看不懂題目問什麼耶??

[acharlie]

on a certain date,Hannah ivested $5000 at x percent simple annual interest and a different amount at y percent simple annual interest .What amount did Hannah invest at y percent simple annaul interest?
(1) The total amount of interest earned by Hannah's due investment in one year was $900
(2) Hannah invested the $5000 at 6 percent simple annaul interest.

答案為E
我看不懂題目問什麼耶??

H這個人投資了5000依單利年利率x%,以及不同金額(amout)依單利年利率y%,問H投資了多少錢在單利年利率y%之中?

(1)總共到期利息為900 --->5000x%+Ny%=900 不充分
(2)H投資5000在6%單利年利率--> 5000x6% 不充分

(1)+(2)還是不知道N是多少