a piggy bank contains $8.80 in quarters, dimes and nickles. there are two more than five times as many nickles as quarters, and four less than twice as many dimes as quarters. how may of each coin are there

Answer 1

880 = 25 q + 10 d + 5 n

n = (2 + 5 q)

d = (2 q - 4)

so
880 = 25 q + 10 (2 q - 4) + 5 (2 + 5 q)

solve for q and go back for n and d