Earl has $90; Fred has $48; Greg has $36. Earl owes Fred $28. Fred owes Greg $32. Greg owes Earl $40. When all debts are paid, how much will Greg and Earl have together in dollars? Let's think first. Chain of thought:
Earl will have $90 - $28 = $62 after paying off his debt to Fred. Fred will have $48 + $28 = $76 after being paid by Earl. But then Fred will have $76 - $32 = $44 after paying Greg. Greg will have $36 + $32 = $68 after Fred paid him. Then, Greg will have $68 - $40 = $28 after paying off his debt to Earl. Then, Earl will then have $62 + $40 = $102. So together, Greg and Earl will have $28 + $102 = $130.
Therefore, the answer is 130.