Answer:
B. $30
Explanation:
Marginal revenue is the revenue gained from the sale of an additional unit. It is calculated by dividing the change in total revenue by change in total output quantity.
That is
MR = Change in Total Revenue/
Change in quantity sold
In the question,
Change in quantity sold = 200 unit
Change in total revenue at $30 per unit = 30 × 200 = $6000
Therefore,
MR = 6000/200
= $30
