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EXAMPLE 2.6-3 (Blending Problem) f2 A firm produces an alloy having the following specifications: (i) specific gravity s 0.98, (ii) chromium > 8%, (iii) melting point 450C. Raw materials A, B and C having the properties shown in the table can be used to make the alloy. TABLE 2.3 Properties of raw material Property A B C Specific gravity 0.92 0.97 1.04 Chromium 7% 13% 16% Melting point 440C 490C 480C Costs of the various raw materials per ton are: * 90 for A, 280 for B and 40 for C. Formulate the L.P. model to find the proportions in which A, B and C be used to obtain an alloy of desired properties while the cost of raw materials is minimum. Tonni