Question 312958
.10x+.08(10,000-x)=872
.10x+800-.08x=872
.02x=872-800
.02x=72
x=72/.02
x=3,600 Invested @ 10%
10,000-3,600=6,400 Invested @ 8%
Proof:
.10*3,600+.08*6,400=872
360+512=872
872=872