For the answer to the question above, and we are told that there are "four times as many quarters as nickels" this translates to q = 4n
0.05n + 0.25q = 2.10 and q = 4n are your two equations that could be used to solve this problem
if you would like to know how many nickels and how many quarters there are, plug in q = 4n into the first equation and get 0.05n + 0.25(4n) = 2.10 then I would stop here because I didn't see the choices. So the answer is 4n
