Math Question Ed'd profit on "good luck" cards in 2018 was £360
this was a decrease of 20% on his profit in 2017
work out ed'd profit on good luck card in 2017

Can any one me with the answers to these questions asap?

Which of the following is the result of expanding the series

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .