Question 83360
2d+d+n=20, n=20-3d
25*2d+10*d+5(20-3d)=370
50d+10d+100-15d=370
45d=370-100
45d=270
d=270/45
d=6 number of dimes.
2*6=12 number of quarters.
20-6-12=2 number of nickles.
proof
12*25+6*10+2*5=370
300+60+10=370
370=370