A supplier has three customers. Deliveries are made daily. The point-to-point travel time is 1 hour each and the time to load/unload at each point is ½ hour. There is one truck and there are three drivers who can report to work only at the supplier’s point and can disembark at supplier’s point only. The workday for the drivers comprises 8 hours. Answer the following.

(a) How many deliveries can be made in a 24-hour day?

(b) If the drivers can report to duty and disembark at any point, how many deliveries can be made in a 24-hour day?

(c) If there are 4 drivers who can report to duty and disembark at any point, would that improve the number of deliveries? How?