According to Table 1 below, what is the average total cost when output per day is 21?

Question

BlackTom AI · Accepted Answer

Average total cost = (Total fixed cost + Total variable cost) ÷ Quantity.

1) Relevant knowledge points and concepts
- Total cost (TC) = Total fixed cost (TFC) + Total variable cost (TVC).
- Average total cost (ATC) = TC / quantity (Q).
- Fixed costs do not change with output, so TFC is the same for all rows in the table.

2) Step-by-step reasoning
- From the table, at Q = 20: TFC = 300, TVC = 50 and ATC = 17.50. This confirms TFC = 300 is constant.
- Therefore for Q = 21, TFC = 300 also (the table labels A but fixed costs remain 300).
- TVC at Q = 21 is given as 80.

3) Calculations (all intermediate steps)
- Compute total cost at Q = 21: TC = TFC + TVC = 300 + 80 = 380.
- Compute average total cost: ATC = TC / Q = 380 ÷ 21.
- Perform division: 21 × 18 = 378, remainder 2 → 2/21 ≈ 0.095238.
- ATC ≈ 18 + 0.095238 = 18.095238... Rounded to two decimals = 18.10.

4) Why the correct answer is correct
- Using the standard ATC formula and the constant TFC from the table yields TC = 380 and ATC ≈ 18.095 → 18.10. This matches the calculation and the pattern in the table (ATC increases from 17.50 at Q=20 to about 19.10 at Q=22).

5) Why the other options are incorrect
- a. 3.80 is far too small; it would imply TC ≈ 79.8 which contradicts known fixed cost 300.
- c. 18.90 (≈18.90) is higher than the computed 18.095 and does not match the exact division.
- d. 20.00 is much higher and incompatible with TC = 380 (380/21 ≠ 20).

6) Conclusion
The average total cost at output 21 is 18.10, confirming the provided answer (b. 18.10).

According to Table 1 below, what is the average total cost when output per day is 21?单项选择题

类似问题

An increase in stock prices the size of people's wealth and may their willingness to spend, ceteris paribus.

Floating exchange rates are determined by

According to the video, who is most important in determining how resources are allocated in a market system?

If the price of cinema tickets rises, and fewer people go to the cinema, this is an example of:

Why does money flow from households to firms?

Economics is the study of how society manages its

Choose A, B, C or D as the best answer.30. The author’s main argument is that __________.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单