Question 150590
.10x+.14(50,000-x)=6,400
.10x+7,000-.14x=6,400
-.04x=6,400-7,000
-.-4x=-600
x=-600/-.04
x=15,000 invested @ 10%.
50,000-15,000=35,000 invested @ 14%.
proof
.10*15,000+.14*35,000=6,400
1,500+ 4,900=6,400
6,400=6,400