At noon, ship A is 100 km west of ship B. Ship A is sailing north at 40 km/h and ship B is sailing south at 24 km/h. How fast is the distance between the ships changing at 4 PM?

{3 pelnte} At noon, ship A Is 1DD km west of ship [3. Shlp A Is eelllng north at 4B kmm and ship B Is eelllng south at 24 kn'v'h. Hew fest Ie the dletence between the ships changing at 4 PM? 'Ihe dletence between the ships Ie changing at a rate of C] Kn'u'h