20. Suppose the firm whose data are given in the table to the right has to pay its workers $20 per hour but also suppose that fixed costs increase by $10 per hour. At this wage rate the approximate marginal cost of the 52nd unit of output is:
  1. $ 4.00
  2. $ 2.30
  3. $8.00
  4. $2.40
  5. $5.00
Workers Output
1 10
2 22
3 31
4 40
5 47
6 52
7 56
8 59
9 61
10 62

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