Question

A street light is at the top of a 20 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 8 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 30 ft from the base of the pole?

need help with the rate of this ...basically to start it ..then i can do the rest.. for some reason my answer isnt right..

Answer 1

20/x = 6(x-y)

Answer 2

y=30 ft

simplified 12x=20y