Suppose there is a perfectly competitive industry where all the firms are identical with identical cost curves. Furthermore, suppose that a representative firm’s total cost is given by the equation TC = 100 + q2 + q where q is the quantity of output produced by the firm. You also know that the market demand for this product is given by the equation P = 900 - 2Q where Q is the market quantity. In addition, you are told that the market supply curve is given by the equation P = 100 + Q.
Answer : Equilibrium price and quantity are :
Market demand:
P=900-2Q
Market supply:
P=100+Q
900-2Q= 100+Q
900-100=3Q
800/3=Q
Q= 267 units
P= 100+267=$367
2. ) TC= 100+q2+q
MC = 2q+1
3) firm profit maximization level is MR= MC
TR= 900Q-2Q 2
MR = 900-4Q
900-4q= 2q+1
900-1= 6q
899/6=q
Q= 150 units
4) TR=P*Q=( 900-2Q)*Q= 900Q-2Q2= 900*(150)-2(150)2 = $90,000
5)TC= 100+q2 +q = 100+(150)2+150= $22750
6) Profit= TR - TC = $90,000-$22,750= $67,250
Suppose there is a perfectly competitive industry where all the firms are identical with identical cost...
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