I know this is a simple problem, but i do not know how to approach it.

I tried finding the power exerted by the object but that got me no where. So how do i solve this?How long would it take a crane motor to lift a 1000kg container 5m from the ground to a storage platform if its power is:

a) 10 kilowatts

b) 20 kilowatts

Thank you for your time!