ECON 342 ECON342 Exam 1 with Answers (Penn State University)

ECON 342 ECON342 Exam 1 with Answers (Penn State University)

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ECON 342 ECON342 Exam 1 Answers (Version 1) (Penn State University)

1.  (40 Total Points) Suppose there are two firms operating in a market.  The firms produce identical products, and the total cost for each firm is given by C = 10qi, i = 1,2, where qi is the quantity of output produced by firm i.  Therefore the marginal cost for each firm is constant at MC = 10.  Also, the market demand is given by P = 106 –2Q, where Q= q1 + q2 is the total industry output.

2.  (20 Total Points) Suppose in the short run a perfectly competitive firm has a fixed cost , F = $147.  The firm’s variable cost of production is given by TVC = 3q +3q2, where q is the quantity of output that the firm produces.  The marginal cost of the firm is given by MC = 3 + 6q.  The market demand for the good is given by Qd = 145 - 2P, where Qd is the total quantity demanded and P is the price of the good.  Also, the market supply is given by Qs = -50 + 3P.


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