A small trucking company is determining the com-position of its next trucking job. The load master has his choice of seven different types of cargo, which may be loaded in full or in part. The specifications of the cargo types are shown in the following table. The goal is to maximize the amount of freight, in terms of dollars, for the trip. The truck can hold up to 900 pounds of cargo in a 2,500-cubic-foot space. What cargo should be loaded, and what will be the total freight charged?

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CARGO FREIGHT TYPE VOLUME PERPOUND AVAILABLE POUNDS PER POUND (CU. FT.) $8.00 $6.00 $3.50 $5.75 $9.50 $5.25 $8.60 2.7 6.3 8.4 5.5 210 150 90 120 130 340 250