It looks like your query is incomplete. You mentioned:
five men can complete a piece of work in
Could you please provide the full question or specify what you want to find out? For example, are you looking for:
- How long it takes five men to complete the work?
- How long it would take a different number of men to complete the same work?
- Something else related to work and time?
Feel free to provide more details so I can assist you accurately!