Question 127078
Q+N=25 OR Q=25-N
.25Q+.05N=3.85
.25(25-N)+.05N=3.85
6.25-.25N+.05N=3.85
-.2N=3.85-6.25
-.2N=-2.4
N=-2.4/.2
N=12 THE NUMBER OF NICKELS.
25-12=13 QUARTERS.
PROOF:
.25*13+12*.05=3.85
3.25+.6=3.85
3.85=3.85