Question 161570
500*.06+.09x=.08(500+x)
30+.09x=40+.08x
.09x-.08x=40-30
.01x=10
x=10/.01
x=1,000 must be invested @ 9%.
Proof:
500*.06+.09*1,000=.08(500+1,000)
30+90=.08*1,500
120=120