sophia put amount of money into each of 2 investment A and B, simple annual interest. If annual interest of investment B is 1.5 time that of investment A, what amount did sophia put into investment A? 1 interest for 1 year is $50 for investment A and $150 for investment B 2 the amount that sophia put into investment B is twice the amount that she put into investment A 请教大家,这道题目选E 我认为是C | 
