Question 104549
.09X+.06(8000-X)=540
.09X+480-.06X=540
.03X=540-480
.03X=60
X=60/.03
X=2000 INVESTED @ 9%
8000-2000=6000 INVESTED @ 6%.
PROOF
.09*2000+.06*6000=540
180+360=540
540=540