Commodity X is produced domestically by a perfectly competitive industry under conditions of increasing costs. Each firm has the following long-run total cost function. LTC=0.1q3 -1.6q2 + (70+ 0.005Q) q Where q is the firm's output per week, and Q is the output of the entire domestic industry. Since each firm operates competitively, each considers Q to be beyond its control and ignores the insignificant contributions of its own. q to industry Q. X can also be imported or exported at a constant price of $10 per unit. There are no transport costs. The domestic market demand curve is given by the equation: X=27, 900 -1,500P Where X is total domestic purchases per week, and P is the price per unit. What quantity is imported or exported per week? How many domestic firms are there?

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Commodity X is produced domestically by a perfectly competitive industry under conditions

of increasing costs. Each firm has the following long-run total cost function.

LTC=0.1q3 -1.6q2 + (70+ 0.005Q) q

Where q is the firm's output per week, and Q is the output of the entire domestic industry. Since

each firm operates competitively, each considers Q to be beyond its control and ignores the

insignificant contributions of its own. q to industry Q.

X can also be imported or exported at a constant price of $10 per unit. There are no transport

costs.

The domestic market demand curve is given by the equation:

X=27, 900 -1,500P

Where X is total domestic purchases per week, and P is the price per unit.

  1. What quantity is imported or exported per week?
  2. How many domestic firms are there?
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