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A 10.2 The optimal solution of the illustrative problem of Chapter 7 calls for 39 bookcases, 48 chairs, and 30 bedframes to be produced per day. Solve the following variations: (i) The net profit brought in by each desk increases from $13 to $15. (ii) The availability of metal increases from 117 to 125 units per day. (iii) The company may also produce coffee tables, each of which requires three hours of work, one unit of metal, two units of wood, and brings in a net profit of $14. (iv) The number of chairs produced must be at most five times the numbers of desks. (v) The demand for wood per chair increases from three to four units. A 10.2 The optimal solution of the illustrative problem of Chapter 7 calls for 39 bookcases, 48 chairs, and 30 bedframes to be produced per day. Solve the following variations: (i) The net profit brought in by each desk increases from $13 to $15. (ii) The availability of metal increases from 117 to 125 units per day. (iii) The company may also produce coffee tables, each of which requires three hours of work, one unit of metal, two units of wood, and brings in a net profit of $14. (iv) The number of chairs produced must be at most five times the numbers of desks. (v) The demand for wood per chair increases from three to four units