Question

Assume A Firm Operating Under a short run production period with a total cost function given as TC=200+5Q+2Q^2.Then What Must be the out put size to minimize average cost of production and show if cost of production is increasing or decreasing at this point.

Answers

The output size to minimize average cost of production is Q = 10.

The average cost of production is AC = (200 + 5Q + 2Q^2)/Q = 20 + 5 + 2Q.

At Q = 10, AC = 20 + 5 + 20 = 45.

The cost of production is decreasing at this point, since the derivative of AC with respect to Q is dAC/dQ = 2Q - 5, which is negative at Q = 10.

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