Economics (MindTap Course List)
13th Edition
ISBN: 9781337617383
Author: Roger A. Arnold
Publisher: Cengage Learning
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Chapter 21, Problem 18QP
To determine
Explain whether the marginal cost changes if total cost changes.
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Sean is a hard-working college freshman. One Thursday, he decides to work nonstop until he has answered 88 practice problems for his physics course. He starts work at 8:00 AM and uses a table to keep track of his progress throughout the day. He notices that as he gets tired, it takes him longer to solve each problem.
Time
Total Problems Answered
8:00 AM
0
9:00 AM
40
10:00 AM
64
11:00 AM
80
Noon
88
Use the table to answer the following questions.
The marginal, or additional, gain from Sean’s second hour of work, from 9:00 AM to 10:00 AM, is
problems.
The marginal gain from Sean’s fourth hour of work, from 11:00 AM to noon, is
problems.
Later, the teaching assistant for Sean’s physics course gives him some advice. “Based on past experience,” the teaching assistant says, “working on 12 problems raises a student’s exam score by about the same amount as reading the textbook for 1 hour.” For simplicity, assume students always cover the same number of…
Please answer the question at the bottom about the four hours of study time.
Chapter 21 Solutions
Economics (MindTap Course List)
Ch. 21.2 - Prob. 1STCh. 21.2 - Prob. 2STCh. 21.2 - Prob. 3STCh. 21.2 - Prob. 4STCh. 21.3 - Prob. 1STCh. 21.3 - Prob. 2STCh. 21.3 - Prob. 3STCh. 21.4 - Prob. 1STCh. 21.4 - Prob. 2STCh. 21.4 - Prob. 3ST
Ch. 21.4 - Prob. 4STCh. 21.5 - Prob. 1STCh. 21.5 - Prob. 2STCh. 21.5 - Prob. 3STCh. 21 - Prob. 1QPCh. 21 - Prob. 2QPCh. 21 - Prob. 3QPCh. 21 - Prob. 4QPCh. 21 - Prob. 5QPCh. 21 - Prob. 6QPCh. 21 - Prob. 7QPCh. 21 - Prob. 8QPCh. 21 - Prob. 9QPCh. 21 - Prob. 10QPCh. 21 - Prob. 11QPCh. 21 - Prob. 12QPCh. 21 - Prob. 13QPCh. 21 - Prob. 14QPCh. 21 - Prob. 15QPCh. 21 - Prob. 16QPCh. 21 - Prob. 17QPCh. 21 - Prob. 18QPCh. 21 - Prob. 19QPCh. 21 - Prob. 1WNGCh. 21 - Prob. 2WNGCh. 21 - Prob. 3WNGCh. 21 - Prob. 4WNGCh. 21 - Prob. 5WNGCh. 21 - Prob. 6WNGCh. 21 - Prob. 7WNGCh. 21 - Prob. 8WNGCh. 21 - Prob. 9WNG
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- Explain how a decrease in input prices or an increase in efficiency would affect costs.arrow_forwardSHOW FORMULAS IN EXCEL PLEASEarrow_forward4. Costs in the short run versus in the long run Ike's Bikes is a major manufacturer of bicycles. Currently, the company produces bikes using only one factory. However, it is considering expanding production to two or even three factories. The following table shows the company's short-run average total cost (SRATC) each month for various levels of production if it uses one, two, or three factories. (Note: Q equals the total quantity of bikes produced by all factories.) Average Total Cost (Dollars per bike) Number of Factories Q = 50 Q = 100 Q = 150 Q = 200 Q = 250 Q = 300 180 100 80 120 200 360 2 270 150 80 80 150 270 3 360 200 120 80 100 180 Suppose Ike's Bikes is currently producing 50 bikes per month in its only factory. Its short-run average total cost is $810 per bike. Suppose Ike's Bikes is expecting to produce 50 bikes per month for several years. In this case, in the long run, it would choose to produce bikes using three factoriesarrow_forward
- On the following graph, plot the three SRATC curves for Ike's Bikes from the previous table. Specifically, use the green points (triangle symbol) to plot its SRATC curve if it operates one factory (SRATC,); use the purple points (diamond symbol) to plot its SRATC curve if it operates two factories ( SRATC2); and use the orange points (square symbol) to plot its SRATC curve if it operates three factories (SRATC3). Finally, plot the long-run average total cost (LRATC) curve for Ike's Bikes using the blue points (circle symbol). Note: Plot your points in the order in vwhich you would like them connected. Line segments will connect the points automatically.arrow_forward5. Costs in the short run versus in the long run Ike's Bikes is a major manufacturer of bicycles. Currently, the company produces bikes using only one factory. However, it is considering expanding production to two or even three factories. The following table shows the company's short-run average total cost (SRATC) each month for various levels of production if it uses one, two, or three factories. (Note: Q equals the total quantity of bikes produced by all factories.) Average Total Cost (Dollars per bike) Number of Factories Q = 100 Q = 200 Q = 300 Q = 400 Q = 500 Q = 600 360 200 160 240 400 720 2 540 300 160 160 300 540 3 720 400 240 160 200 360 Suppose Ike's Bikes is currently producing 100 bikes per month in its only factory. Its short-run average total cost is $ per bike. Suppose Ike's Bikes is expecting to produce 100 bikes per month for several years. In this case, in the long run, it would choose to produce bikes using On the following graph, plot the three SRATC curves for…arrow_forwardOn the following graph, plot the three SRATC curves for Ike's Bikes from the previous table. Specifically, use the green points (triangle symbol) to plot its SRATC curve if it operates one factory (SRATC1); use the purple points (diamond symbol) to plot its SRATC curve if it operates two factories (SRATC2); and use the orange points (square symbol) to plot its SRATC curve if it operates three factories (SRATC3). Finally, plot the long-run average total cost (LRATC) curve for Ike's Bikes using the blue points (circle symbol). Note: Plot your points in the order in which you would like them connected. Line segments will connect the points automatically. 800 720 SRATC, 640 580 480 SRATC, 400 320 SRATC, 240 180 LRATC 80 100 200 300 400 500 600 700 QUANTITY (Bikes) In the following table, indicate whether the long-run average cost curve exhibits economies of scale, constant returns to scale, or diseconomies of scale for each range of bike production. Range Economies of Scale Constant…arrow_forward
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