A machine produces pieces at the rate of 100 per hour. The cost of production is Tk. 5 per unit. Each unit sells at Tk. 10. However, 10 per cent of the production is defective and all defective items are scrapped. If production is increased by x then the cost of production increases by 0.5x per cent and (10 +0.8x) per cent of the items are defective.
If the production is increased to 120 pieces per hour, the profit is:
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