Question 286374
.075*2x+.09x=900
.15x+.09x=900
.24x=900
x=900/.24
x=3,750 amount of the 9% investment.
2*3,750=7,500 amount invested @ 7.5%.
Proof:
.075*7,500+.09*3,750=900
562.50+337.50=900
900=900