Gabe has 60 coins consisting of quarters and dimes. The combined value of the coins is $9.45. Find how many quarters and dimes Gabe has.

We could say that dimes = x and quarters = 60 - x

Then we use the value of the coins

10 (x) + 25 (60-x) = 945

I did 945 because I am doing this in cents not dollars but the answer would still work because it is asking for the amount of coins.

10x + 1500 - 25x = 945

-15x = - 555

x = 37

Dimes = x = 37

Quarters = 60 - x = 60 - 37 = 23