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A firm faces the following average revenue (demand) curve: P= 125 -0.02Q where Q is weekly production and P is price, measure

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Answer #1

The firm maximizes profit when MR =MC

TR = PQ = (125-0.02Q)*Q

=> MR = dTR/dQ = 125 - 0.04Q

C = 45Q + 20000

=> MC = 45

Thus, at profit max, we have 125 - 0.04Q = 45

=> 0.04Q = 80

=> Q = 80/0.04 = 2000

Thus, P = 125 - 0.02*2000 = 85 cents

Total profits = TR - C = 2000*85 - 45*2000 - 20000 = 60000 cents = $600

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