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.

Table

TO FROM PROJECT A PROJECT B PROJECT C CAPACITY

PLANT 1 $10 $4 $11 70

PLANT 2 $12 $5 $ 8 50

PLANT 3 $ 9 $7 $ 6 30

REQUIREMENTS 40 50 60