French phrase
Combien de temps prenez-vous pour ~ ?
Meaning
How long does it take you to ___?
When to use it
A polite question about the time a task requires. It suits requests for a specific time estimate.
Example dialogue
Combien de temps prenez-vous pour nettoyer la chambre ?
How long does it take you to clean the room?
En général, vingt minutes suffisent.
In general, twenty minutes are enough.