Suppose a firm wants to produce 60 units of it product by
allocating production into two factories, Factory A and Factory B.
If MCA= 4+ 2QA and MCB=4+ QB represent the corresponding marginal
cost functions, then what is the likely quantity produced in
Factory A?
Find QA and QB such that QA+QB = 60 and MCA = MCB. You will get QA
= 20 and QB = 40.
Answer: 20 units
MCA = 4 + 2QA .......(1)
MCB = 4 + QB.......(2)
QA + QB = 60.......(3)
MCA = MCB
As, MCA = MCB,
4 + 2QA = 4 + QB
Or, 2QA = QB
Now, we can write the equation(3) as,
QA + 2QA = 60
Or, 3QA = 60
Or, QA = 60 / 3
Or, QA = 20
Now, putting the value of QA in equation(3), we get,
20 + QB = 60
Or, QB = 60 - 20
Or, QB = 40
The likely quantity produced in Factory A is 20 units.
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