Question 672425
8%-------------------x
9%-------------------2x

Balance @

5%-------------------(5500-3x)

Interest = 449

0.08x+0.09(2x)+0.05(5500-3x)=449

Multiply by 100
8x+18x+27500-15x=44900

11x=44900-27500
11x=17400
x= 1581.82................8%
2x=3163.64.................9%
754.55.....................5%