Question 154017
.09x+.08(9000-x)=770
.09x+720-.08x=770
.01x=770-720
.01x=50
x=50/.01
x=$5,000 amount invested @ 9%
9000-5000=$4,000 amount invested @ 8%
proof:
.09*5000+.08*4000=770
450+320=770
770=770