Question

A man starts walking north at 2 ft/s from a point P. Five minutes later a woman starts walking south at 3 ft/s from a point 500 ft due east of P. At what rate are the people moving apart 15 minutes after the woman starts walking? (Round your answer to two decimal places.)

Answer 1

This should be helpful.....
http://imgur.com/kTzQzkC

Answer 2

it's 4.98