Question 144557
.06x+.10(3,000+2x)=4,200
.06x+300+.20x=4,200
.26x=4,200-300
.26x=3,900
x=3,900/.26
x=$15,000 invested @ 6%.
3,000+2*15,000
3,000+$30,000=$33,000 invested @ 10%.
proof:
.06*15,000+.10*33,000=4,200
900+3,300=4,200
4,200=4,200