[Solution] A firm in a perfectly competitive industry has this cost function: TC = 2700 + 3q2 If market demand is QD = 1500 - 5P, what is an individual


Question: A firm in a perfectly competitive industry has this cost function: TC = 2700 + 3q2

  1. If market demand is QD = 1500 – 5P, what is an individual firm’s optimal price, output, and profit? What is the industry’s total price and output? How many firms are there in the industry?
  2. Now, if demand increases to QD = 2400 – 5P, what is the short-run optimal price, output and profit? What is the industry’s total price and output? How many firms are there in the industry?
  3. What happens in the long-run ?

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