14 Oilco produces two products: regular and premium gasoline. Each product contains .15 gram of lead per liter.

The two products are produced from six inputs: reformate, fluid catalytic cracker gasoline (FCG), isomerate (ISO), polymer (POL), MTBE (MTB), and butane (BUT). Each input has four attributes:

Attribute 1 Research octane number (RON)

Attribute 2 RVP Attribute 3 ASTM volatility at 70°C Attribute 4 ASTM volatility at 130°C The attributes and daily availability (in liters) of each input are given in Table 21.

The requirements for each output are given in Table 22.

The daily demand (in thousands of liters) for each product must be met, but more can be produced if desired. The RON and ASTM requirements are minimums. Regular gasoline sells for 29.49¢/liter, premium gasoline for 31.43¢. Before being ready for sale, .15 gram/liter of lead must be removed from each product. The cost of removing .1 gram/liter is 8.5¢. At most 38% of each type of gasoline can consist of FCG. Formulate and solve an LP whose solution will tell Oilco how to maximize their daily profit

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Year Stocks Gold T-Bills 1968 11 11 1969 -9 1970 4 1971 14 1972 19 1973 -15 1974 -27 1975 37 1976 24 1977 -7 1978 7 1979 19 1980 33 8 3 8 57 -14 7 14 4 44 4 66 7 64 8 6 -22 18 55 7 10 11 1981 -5 -25 15 1982 22 4 11 1983 23 -11 9 1984 6 -15 10 1985 32 -12 8 1986 19 16 6 1987 5 22 5 1988 17 -2 6