Answer: The total cost at an output level of eight units is $750.
We have
Average Fixed Cost (AFC) $12.50
Average Variable Cost (VC) $81.25
Number of units 8
We compute the total fixed cost (TFC) as follows:
[tex]TFC = AFC * Number of units (output)[/tex]
[tex]\mathbf{TFC = 12.50 * 8 = 100}[/tex]
We calculate Total Variable Cost (TVC) as:
[tex]TVC = VC *number of units[/tex]
[tex]TVC = 81.25 *8 = 650[/tex]
Since Total Costs (TC) is nothing but the sum of total fixed costs and total variable costs,
[tex]TC = TFC + TVC[/tex]
[tex]TC = 100 + 650 = 750[/tex]