Answer:
$35
Explanation:
Note the formula:
Total revenue (TR)= Price (P) x Q and Marginal revenue (MR) = Change in TR / Change in Q
Total Revenue for 2 units of output sold
= 2 x $50 = $100
Total Revenue for 3 units of output sold
= 3 x $45 = $135
The Marginal Revenue=
Change in TR (135-100) / Change in quantity (3-2)
= $35/1
= $35
Therefore, the Marginal Revenue If the firm sells 3 units of output, will be $35.