the Marked price of an article is 25% above its cost price when it is sold at a discount of 15% there is a gain of rupees 200 find the cost price of the article and the Marked price of the article

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 .