Math Help - Cargo Problem

Two kinds of crated cargo, A and B, are to be shipped by truck. The weight and volume of each type are given int he following tables
A B
Volumes 50 Cubic Feet 10 Cubic Feet
Weight 200 Pounds 360 Pounds

The shipping company charges $75 per crate for cargo A and $100 per crate for cargo B. The truck has a maximum load limit of 7,200 pounds and 1,000 cubic feet. How many of each type of cargo should be shipped to maximize profit for the shipping company?

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