Question

An electric pole casts a shadow of length 20m at atime when atree 6m high casts a shadow of length 8m. gind the height of the pole

Answer 1

pole shadow length = 20m
tree height = 6m
tree shadow length = 8m
pole height = x
x/20m = 6m/8m 
x = 6m x 20m/8m 
x = 120m/8m
x = 15m
hence, pole height = 15m

Hope it helps!!