# A refinery blends four petroleum components into three grades of gasolineregular, premium, and diesel. The maximum quantities

## Question:

To ensure that each gasoline grade retains certain essential characteristics, the refinery has put limits on the percentages of the components in each blend. The limits as well as the selling prices for the various grades are as follows:

The refinery wants to produce at least 3,000 barrels of each grade of gasoline. Management wishes to determine the optimal mix of the four components that will maximize profit.

a. Formulate a linear programming model for this problem.

b. Solve the model by using thecomputer.

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