The value of the VMP are 600, 570, 540, 510, 480, 450. The total workers to be hired are 4 workers because MRL > wage.
= MP * selling price
This has been computed in the excel file that I have attached to the question.
2. A competitive firm is going to have to hire when the wage is equal to MRPL or MRPL is greater than the wage
based on this the labor of the firm would be at 4 units.
3. Four workers are going to be hired based on the fact that the marginal revenue of the added labor is more than the wage that was paid for the work done.
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