SOLUTION: Chary invested an amount at 12% and twice as much at 9%. Her annual interest at 9% is P10140 more than her annual interest on 12%. How much is invested at each rate?

Algebra ->  Finance -> SOLUTION: Chary invested an amount at 12% and twice as much at 9%. Her annual interest at 9% is P10140 more than her annual interest on 12%. How much is invested at each rate?      Log On

Amount Invested        Amount of Interest


2x at 9%               0.09*2x


x at 12%               0.12*x