Question 323430
.075X+.07(4,200-X)=306
.075X+294-.07X=306
.005X=306-294
.005X=12
X=12/.005
X=2,400 AMOUNT INVESTED @ 7.5%.
4,200-2,400=1,800 AMOUNT INVESTED @ 7%.
PROOF:
.075*2,400+.07*1,800=306
180+126=306
306=306