Question 205398
N+D=18
N=18-D
.05N+.10D=1.45
.05(18-D)+.10D=1.45
.90-.05D+.10D=1.45
.05D=1.45-.90
.05D=.55
D=.55/.05
D=11 DIMES.
N+11=18
N=18-11
N=7 NICKLES.
PROOF:
.05*7+.10*11=1.45
.35+110=1.45
1.45=1.45