How Do You Calculate the Power of a Crane Lifting a Mass?

[DoMiNoEs]

Hey! please can you explain how i do this (not the answer, just an example of how i could fnd the answer to this question)::

Q) A crane can lift a 500kg mass (not weight) to a height of 30m in 15s. How much power would the crane have?

a. 1000 W
b. 2450 W
c. 51 W
d. 9800 W

I'm guessing it would be 51W but not sure since we haven't had any practice @ class...

Thanks everyone!

 

[shyta]

use the definition of power which is the rate of doing work.

what is the work done by the machine?
what is the time taken?