Question 715448
.05X+.03(28,000-X)=920
.05X+840-.03X=920
.02X=920-840
.02X=80
X=80/.02
X=$4,000 INVESTED @ 5%.
28,000-4,000=$24,000  INVESTED @ 3%.
PROOF:
.05*4,000+.03*24,000=920
200+720=920
920=920