Question 263870
N=7Q
.05N+.25Q=2.40
.05*7Q+.25Q=2.40
.35Q+.25Q=2.40
.60Q=2.40
Q=2.40/.60
Q=4 NUMBER OF QUARTERS.
4*7=28 NUMBER OF NICKELS.
PROOF:
.05*28+.25*4=2.40
1.40+1.00=2.40
2.40=2.40