A piano and a crane physics question?

Question

A piano whose mass is 170 kg is being lifted at a steady speed from ground level straight up to an apartment 10.6m above the ground. The crane that is doing the lifting produces a steady power of 560W. How much time does it take to lift the piano?

Answer 1

P = W / t = mgh / t

or
t = mgh / P = 170 * 9.8 * 10.6 / 560 = 31.535 s

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Answer 2

power = work / time

work = force x distance

so:

power = (force x distance) / time.

The force is the same as the piano's weight.

They give you the power, the force and the distance. Solve for "time".