Question 218369
.09X+.04(8,000-X)=420
.09X+320-.04X=420
.05X=420-320
.05X=100
X=100/.05
X=2,000 AMOUNT INVESTED @ 9%.
8,000-2,000=6,000 AMOUNT INVESTED @ 4%.
PROOF:
.09*2,000+.04*6,000=4200
180+240=420
420=420