how much is the efficiency?

Question

an inclined plane is 10 meters high. An effort of 200 newtons is required to pull an 800 newton cart up the inclineplane.

Answer 1

Efficiency is = Pout/Pin
P=E/t
E=Fs

So Efficiency= (Fin S/t)/(Fout h)
Fin - force that is doing work
S - displacement along which Fin is applied or the length of the ramp

Fout - weight of the cart
h - height the cart was raised.

We need information to determine S