The load master for a freighter wants to determine the mix of cargo to be carried on the next trip. The ship's volume limit for cargo is 100,000 cubic meters, and its weight capacity is 2,310 tons. The master has five different types of cargo from which to select and wishes to maximize the value of the selected shipment. However, to make sure that none of his customers are ignored, the load master would like to make sure that at least 20% of each cargo's available weight is selected. The specificaion for the five cargoes are shown in the following table.

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VOLUME PER TON (CU. CARGO TONS VALUE PER ΤΥΡΕ AVAILABLE TON M.) $1,350 970 26 $1,675 850 54 $1,145 1,900 28 $850 2,300 45 $1,340 3600 37