If a competitive market has three firms with marginal costs of mc1 = q1, mc2 = 0. 50q2, and mc3 = 2q3 and faces a market price of $10, The total quantity supplied by all three firms is =10+20+5=25
in a competitive market p= mc.
Here p is given as $10
Thus MC = 10
first firm-
MC1 =Q1
ie, 10=10
=10 quantity supplied
Firm 2
MC2 =.50Q2
10=0.50(Q2)
Q2=10/0.50=
= 20 quantity supplied
Firm 3
MC3 =2Q3
10=2(Q3)
Q3 =10/2=5
= 5 quantity supplied.
In economics, marginal cost is the change in total cost that occurs when output increases, the cost of producing additional quantity.
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