A Coolie raises a box of mass 20 kg to a height of 1.5m. If the force of gravity on 1 kg is 10N. The work done by the Coolie is this is physics question

John spent the last few decades doing crossfit, but now that he's a bit older, he's decided to switch to more individualized training to retain the physical benefit of - strength building - footwork and balance - scoring and strategy - rhythmic movement