Since the case states that the 5 distribution centers are in a big city ( doesn't specify multiple cities or one city but guess by the fuel cost there are 5 cities long distance a part). What if the company lease the truck and go from one city to the other? The fuel cost are not very clear,is the cost from starting point to center A,B .. and what is the distance between centrers and what is the cost of the fuel per km? If the company is able to rent the truck and go to multiple centers all in once can reduce the loss of capacity per truck ( ex. now the truck carie only150 box and pay for a capacity of 300 box).