A manufacturing enterprise manufactures ball-bearings using a special type of metal as raw material. The following budget was compiled for the coming year After the budget had been compiled, the full demand for raw materials could not be met. Due to the shortage of raw materials, only 75% of the materials required could be supplied. However, despite the shortage, the unit price of raw materials remains unaltered Required: 5.1 Calculate the product mix that will result in the maximum profit for the enterprise given the shortage of raw materials