Interest: A man invests $2200 in three accounts that pay 6%,8%, and 9% annual interest, respectively. He has three times as much invested at 9% as he does at 6%. If his total interest for the year is $178, how much has he invested?
I dont know how to set this problem up. If some one would be so kind as to show me I would be grateful.
I dont know how to set this problem up. If some one would be so kind as to show me I would be grateful.