Question

A 25 foot tall flagpole cast =s a 20 foot shadow. If a man with a height of 6 feet stands nearby, what will be the lenghth of this shadow?

Answer 1

the ratio of shadow length to height is the same for pole and man, so

x/6 = 20/25

now just solve for x

Or, you could just say that the heights and shadows have the same ratio, so

x/20 = 6/25

Answer 2

25/20 = 6/x
25x = 120
x = 120/25 = 24/5 or 4.8 ft