Question 1039998
Think about the number of quarters as Q
Therefore the number of dimes is 2Q
Number of nickels is Q+5

Now we convert everything to pennies

Q*25 + 2Q(10)+ (Q+5)5 = 375
50Q + 25 = 375
50Q = 375
Q = 7. This means we have 7 quarters which is equivalent to 175 cents
Number of dimes = 2*Q = 14 = 140 cents
Number of Nickels Q+5 = 12 = 60 cents