A terminal has four customers that need delivery by truck. The customers have the following demand:

Customer	Demand
1	5 tonnes
2	8 tonnes
3	7 tonnes
4	6 tonnes

The truck load capacity is 15 tonnes. The distances (km) between the customers and the terminal are:

	Terminal	Customer 1	Customer 2	Customer 3	Customer 4
Terminal	-
Customer 1	100	-
Customer 2	100	20	-
Customer 3	120	40	30	-
Customer 4	130	60	10	10

a.1. How much is saved if Customer 1 and 2 are served in one route?

a.2. How much is saved if Customer 1 and 3 are served in one route?

a.3. How much is saved if Customer 1 and 4 are served in one route?

a.4. How much is saved if Customer 2 and 3 are served in one route?

a.5. How much is saved if Customer 2 and 4 are served in one route?

a.6. How much is saved if Customer 3 and 4 are served in one route?

b. Given the truck load capacity, how many customers can be served in one route?

c. Which of the route alternatives saves the most in driving distance?

d. How long is the driving distance for the route that saves the most?

e. How much is delivered to the customers on the route that saves the most?

f. How long is the driving distance for the route thats serves the remaining customer (or customers)?

g. How much is delivered on the route thats serves the remaining customer (or customers)?