Creatively image a question and justification for this answer: 4

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The question is: Jake agrees to work part of his debt off. He owed someone $100 but paid them $40 before agreeing to work off the rest.  He worked for $15 an hour. How many hours did he have to work?
Step-by-step reasoning process: He has to work off $100 - $40 = $60. So he has to work $60 / 15 = 4 hours.
