Question 212129
.04X+.0225(33,000-X)=970
.04X+742.5-.0225X=970
.0175X=970-742.50
.0175X=227.5
X=227.5/.0175
X=$13,000 ANOUNT INVESTED @ 4%.
33,000-13,000=20,000 INVESTED @ 2.25%.
PROOF:
.04*13,000+.0225*20,000=970
520+450=970
970=970