A paint manufacturing company uses a sand mill for fine grinding of paint with and output of 100 liters per hour using glass beadsand grinding media. Media load in the mill is 25 kg costing 200 per kg, and is fully replenishedin 2 months time at 8 hours per day operation, 25 days per month. A ceramics grinding media is offered to this paint company, costing 400 per kg and needs 30 kg load in the sand mill, but guarantees an output of 120 liters per hour and full replenishment of media in 3 months. a. If the profit on paint production is 15 per liter, which is profitable to use, glass beads or ceramics as grinding media? b. How much is the difference in profit