Answer:
The answer is more than $80.
It was a $60 check for a debt he owed that was returned to his bank. His bank charged a fee for the returned check. We don't know how much the fee was.
The company Art Supply Inc also charges a $20 fee for returned checks.
He now owes the first debt ($60) plus the fees from the bank (x) and the new fee from the company ($20).
Therefore he owes more than $80.