At what rate are the people moving apart 15 min after the woman starts walking?

Question

man starts walking north at 3 ft/s from a point P. Five minutes later, a woman starts walking south at 5 ft/s from a point 300 ft due east of P. At what rate are the people moving apart 15 min after the woman starts walking?

Round your answer to the nearest hundredth.

Answer 1

MAN =15+45
WOMAN=75

60/(300-x)=75/x

x=2500/9

from pisagor
distance=sqrt(60^2+(300-2500/9)^2+sqrt((2500/9 )2+75^'2)

use your calculator to find the result