1. The Hardrock Concrete Company has plants in three locations and is currently working on three major construction projects, each located at a different site. The shipping cost per truckload of concrete, daily plant capacities and daily project requirements are provided in the table on this page. Formulate this as a linear program to determine the least-cost way to meet the requirements. Solve using any computer software.

2. Hardrock Concrete's owner has decided to increase the capacity at his smallest plant. Instead of producing 30 loads of concrete per day at plant 3, that plant's capacity has been doubled to 60 loads. Does this change the schedule developed previously?

Table for Problem 9-8