Answer:total fixed cost =$50
Step-by-step explanation:
Total Fixed cost id the cost of production that remains constant irrrespective to changes in the production of output produced by a company usually in the short run.
When output is 100.the firm's Total fixed cost = $50
When output doubles to 200 units, the firm's Total fixed cost still remains the same at $50
At every level of output, fixed cost of a firm remains constant.