Suppose there are 100 firms each with a short run total cost of STC = q2 + q + 10, so that marginal cost is MC = 2q +1. If market demand is given by QD = 1050 - 50P, profit to the firm will beQuestion 3Select one:a.9.b.15.c.5.d.6.
Question
Suppose there are 100 firms each with a short run total cost of STC = q2 + q + 10, so that marginal cost is MC = 2q +1. If market demand is given by QD = 1050 - 50P, profit to the firm will beQuestion 3Select one:a.9.b.15.c.5.d.6.
Solution
To solve this problem, we need to find the equilibrium price and quantity in the market, and then use these to calculate the profit for each firm. Here are the steps:
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First, we need to find the market supply. Since each firm has a marginal cost of MC = 2q + 1, they will supply goods to the market until the price equals their marginal cost. So, we can write the supply equation for one firm as P = 2q + 1. Solving for q gives us q = (P - 1) / 2. Since there are 100 firms, the total market supply QS is 100 * q = 50P - 50.
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Next, we equate market supply and market demand to find the equilibrium price: QS = QD, so 50P - 50 = 1050 - 50P. Solving for P gives us P = 22.
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Substituting P = 22 into the demand equation gives us the equilibrium quantity: QD = 1050 - 50*22 = 5. Since there are 100 firms, each firm will produce q = 5 / 100 = 0.05.
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Now we can calculate the profit for each firm. Profit is total revenue minus total cost. Total revenue is price times quantity, so TR = Pq = 220.05 = 1.1. Total cost is given by the equation STC = q^2 + q + 10, so TC = 0.05^2 + 0.05 + 10 = 10.0525. Therefore, profit is TR - TC = 1.1 - 10.0525 = -8.9525.
So, none of the options a, b, c, or d are correct. The profit for each firm is negative, which means they are making a loss.
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