Question 161116
.10D+.05(D+4)=2.60
.10D+.05D+.20=2.60
.15D=2.60-20
.15D=2.40
D=2.40/.15
D=16 DIMES
16+4=20 NICKLES.
PROOF:
.10*16+.05*20=2.60
1.60+1.00=2.60
2.60=2.60