TC = 0.1q2 + 20q + 1000
a) TFC = 1000
TVC = 0.1q2 + 20q
AVC = TVC/q
= ( 0.1q2 + 20q )/q
= 0.1q + 20
b) Shut down point is given by P = min AVC
and AVC is minimum where AVC = MC
dTC/dq = 0.2q + 20
MC = 0.2q + 20
AVC = MC
0.1q + 20 = 0.2q + 20
q = 0
So min. AVC = 0.1(0) + 20
= 20
THUS, shut down price is 20
Supply function is given by
P = MC
P = 0.2q + 20
P - 20 = 0.2q
q = 1/0.2(P - 20)
q = 5P - 100
Therefore firm A's supply function q = 5P - 100
C) Since there are 100 firms so market supply function
Qs = nq
= 100(5P - 100)
= 500P - 10000
D)
Qd = 25000 - 200P
Qs = Qd
500P - 10000 = 25000 - 200P
500P + 200P = 25000 + 10000
700P = 35000
P = 35000/700
= 50
Q = 500(50) - 10000
= 25000 - 10000
= 15000
q = 5P - 100
= 5(50) - 100
= 250 - 100
= 150
THUS, Firm A produces 150 units of output to maximize profit
Firm A 's profit = Pq - TC
= 50(150) - 0.1(150)2 - 20(150) - 1000
= 7500 - 2250 - 3000 - 1000
= 7500 - 6250
= 1250
Price elasticity of demand
Qd = 25000 - 200P
dQ/dP = - 200
Ed = (dQ/dP)(P/Q)
= (- 200)(50/15000) = - 10000/15000
= - 0.66
Price elasticity of supply
Qs = 500P - 10000
dQ/dP = 500
Es = (dQ/dP)(P/Q)
= (500)(50/15000)
= 25000/15000
= 1.66
☹️??? 1. (15 pts) Suppose firm A is one of many perfectly competitive firm and it...
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