5. Pollution Control. Three types of coal, C1, C2, and C3, are pulverized and mixed together to produce 50 tons per hour needed to power a plant for generating electricity. The burning of coal emits sulfur oxide (in parts per million) which must meet the Environmental Protection Agency (EPA) specifications of at most 2000 parts per million. The following table summarizes the data of the situation:

Sulfur (parts per million)

Pulverizer capacity (tonfhr)

Cost per ton Determine the optimal mix of the coals.

Cl 2500 30

$30 C2 1500 30

$35 C3 1600 30

$33 2.3 Selected LP Applications 65