Answer: $28
Step-by-step explanation:
In a Perfectly Competitive Market, firms are price takers in that the price is set by the market. As a result, the Price is equal to the Average Revenue as well as the Marginal Revenue. P = AR = MR
In the table, the Marginal Revenue (increase in revenue when an additional unit is sold) is $28 for all quantities and the Average Revenue at the fifth (and all units) is;
= 140/5
= $28
With both the Average and Marginal Revenues being $28, the price that Firm A receives is $28 as well.