Let's call p the number of pennies that Reed has, and q the number of quarters. From here, you can set up the following system of equations:
p=q+8
p=5q
Now, you can substitute the second equation into the first:
5q=q+8
4q=8
q=2
Reed has two quarters, and therefore 10 pennies. Since each quarter costs 25 cents and each penny costs 1, 25*2+10*1=60 cents in total. Hope this helps!
