Linda put an amount of money into each of two new investments, A and B, that pay simple annual interest. If the annual interest rate of investment B is 1 1/2 times that of investment A, what amount did Linda put into investment A
1. The interest for 1 year is $50 for investment A and $150 for investment B
2. The amount that Linda put into investment B is twice the amount that she put into investment A
为什么是E呀?我觉得是C啊.大家帮忙解释解释吧~作者: jiuwang 时间: 2010-6-18 22:29