Question 474694
nickels=2x dimes
quarters=2x dimes + 4
5n+10d+25q=940
5(2d)+10d+25(2d+4)=940
10d+10d+50d+100=940
70d=840
d=12
n=24
q=28
The bank contains 24 nickels, 12 dimes, and 28 quarters..