At noon, ship A is 150 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing north at 25 km/h. How fast is the distance between the ships changing at 4:00 PM? (a). What quantities are given in the problem? (b). What is the unknown? (c). Draw a picture of the situation for any time t. (d). Write an equation that relates the quantities. (e). Finish solving the problem.
