The following table shows the total cost schedule for a perfectly competitive firm. The current pric… Show more The following table shows the total cost schedule for a perfectly competitive firm. The current price in this industry is $20. Fill in the marginal revenue and marginal cost columns of the table. (Enter your response as an integer.) Output (units) (Q) Total Cost (TC) Marginal Revenue (MR) Marginal Cost (MC) 0 40 – – 1 45 2 55 3 70 4 90 5 115 How I calculate this? • Show less