The total fixed cost should equal $1000.
The first step is to determine the average fixed cost. The average fixed cost can be determined by subtracting the average variable costs from average total costs.
$70 - $60 = $10
Total fixed cost is the product of average fixed cost and output
100 x $10 = $1000
To learn more about cost, please check: https://brainly.com/question/26502221