Please help me solve this problem (show your work)

A retail chain has eight stores in a region supplied from four supply sources. Trucks have a capacity of 30,000 units and cost $1,000 per load plus $100 per delivery. Thus, a truck making two deliveries charges $1,200. The cost of holding one unit in inventory at retail for a year is $0.20.

The vice president of supply chain is considering setting up milk runs from suppliers to retail stores. Determine the best number of stops for the milk runs policy, assuming annual sales for each product at each retail store are 150,000 units?.

1. A retail chain has eight stores in a region supplied from four supply sources. Trucks have a capacity of 30,000 units and cost $1,000 per load plus $100 per delivery. Thus, a truck making two deliveries charges $1,200. The cost of holding one unit in inventory at retail for a year is $0.20. The vice president of supply chain is considering setting up milk runs from suppliers to retail stores. Determine the best number of stops for the milk runs policy, assuming annual sales for each product at each retail store are 150,000 units