Profit = Total Revenue - Total cost
As it is price taking firm so price gets decided by market and lets assume the price as p
Total revenue = pq
hiring per unit of k is = v
Given, q = 3k0.5 = k = q2/9
Therefore, TC = vk = vq2/9
So, Profit = TR - TC = pq - vq2/9
Lets take Profit as X
1st order condition:
d(X)/dq = 0
=> p - 2vq/9 = 0
=> q = 9p/(2v)
Therefore, putting value of q,
X = pq - vq2/9
X = p(9p/(2v)) - v(9p/(2v))2/9
X = 9p2/(2v) - 9p2/(4v)
Profit = 9p2/(4v)
Correct option is (B) 9p2/(4v)
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