company owns two flour mills, A and B, which have different production capacities for high, medium and low grade flour. This company has entered into a contract to supply flour to a firm every week with 12, 8 and 24 quintals of high, medium and low grade respectively. It costs the company Rs.1000 and Rs.800 per day to run mill A and B respectively. On a day, mill A produces 6, 2 and 4 quintals of high, medium and low grade flour respectively; mill B produces 2, 2 and 12 quintals of high, medium and low grade flour respectively. How many days per week should each mill be operated in order to meet the contract order most economically? Solve using graphical method.

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