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Is this correct ? CHAPTER 5 HOMEWORK You should show detailed calculations/processes and explanations. Answer itself is NOT sufficient. 2. A firm's product sells for

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CHAPTER 5 HOMEWORK You should show detailed calculations/processes and explanations. Answer itself is NOT sufficient. 2. A firm's product sells for $4 per unit in a highly competitive market. The firm produces output using capital (which it rents at $25 per hour) and labor (which is paid a wage of $30 per hour under a contract for 20 hours of labor services). Complete the following table and use that information to answer these questions. a. Identify the fixed and variable inputs. . Labor is the fixed input - labor is fixed under a contract for 20 hours of labor services . Capital is the variable input - input since capital is changing. b. What are the firm's fixed costs? labor unit * wage . $30x 20hrs = $600 total fixed cost c. What is the variable cost of producing 475 units of output? . 6x $25 =150 d. How many units of the variable input should be used to maximize profits? 6 units Variable input should be used up to a level where the price of input is equal to the marginal product of input. e. What are the maximum profits this firm can earn? . 4x475-(20x30+6x25) = $1,150 f. Over what range of the variable input usage do increasing marginal returns exist? 0 to 3 units . Since marginal capital increases in the first stage of production, MPk is increasing from units 0 to 3.. Over what range of the variable input usage do w marginal returns exist? 3 to 11 units The marginal return on capital decreases when the rm is in second stage of production and its marginal product of variable input continues to fall. Over what range of input usage do negative marginal returns exist? 7 to 11 units Marginal return on capital turns negative when the rm is in third stage of production and its marginal product of variable input becomes negative. 388888888888 0 I 2 3 4 5 6 7 8 9 0 I oo LDMHOIU'I-hUJMI-io IIII HD | q MP AP AP VMP 20 0 20 50 50 50 2.5 200 20 150 100 75 7.5 400 20 300 150 100 15 600 20 400 100 100 20 400 20 450 50 90 22.5 200 20 475 25 79.17 23.75 100 20 475 0 67.86 23.75 0 20 450 -25 56.25 22.5 -100 20 400 -50 44.44 20 -200 20 300 -100 30 15 -400 20 150 -150 13.64 7.5 -600

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