Question 211106
.10x+.08(3,000-x)=256
.10x+240-.08x=256
.02x=256-240
.02x=16
x=16/.02
x=800 amount invested @ 10%
3,000-800=2,200 invested @ 8%
Proof:
.10*800+.08*2,200=256
80+176=256
256=256