Question 97143
.04X+.07(X+1500)=435
.04X+.07X+105=435
.11X=435-105
.11X=330
X=330/.11
X=3000 AMOUNT INVESTED @ 4%
3000+1500=4500 INVESTED @ 7%
PROOF
.04*3000+.07*4500=435
120+315=435
435=435