Question

A BUS TRAVELS 280 KM SOUTH ALONG A STRAIGHT PATH WITH AN AVERAGE VELOCITY OF 88 KM/H TO THE SOUTH. THE BUS STOPS FOR 24MIN, THEN IT TRAVELS 210 KM SOUTH WITH AN AVERAGE VELOCITY OF 75 KM/H TO THE SOUTH.
A. HOW LONG DOES THE TOTAL TRIP LAST?
B.WHAT IS THE AVERAGE VELOCITY FOR THE TOTAL TRIP?