Question 988082
n = number of nickels
d = number of dimes
q = number of quarters


n = 2q
d = q + 15
5n + 10d + 25q = 375


5(2q) + 10(q + 15) + 25q = 375
10q + 10q + 150 + 25q = 375
45q = 225
q = 5


----> 10 nickels, 20 dimes, 5 quarters