Yishu owns an auto parts manufacturing firm and has fixed costs equal to $420. She is currently producing 20 units of output. At this level of output her average variable cost is $20. If the marginal cost of producing the 21st unit of output is $62, then we can conclude that the average total cost at 21 units of output is $42. true or false.

1. Yishu owns an auto parts manufacturing firm and has fixed costs equal to $420. She is currently
producing 20 units of output. At this level of output her average variable cost is $20. If the marginal
cost of producing the 21st unit of output is $62, then we can conclude that the average total cost at
21 units of output is $42.
true or false