Determine the fixed cost by subtracting the total variable cost at either the high or low activity level from the total cost at that activity level. For Metro Transit Company, the calculations are as follows:Activity LevelTotal cost: High $($$$63,000).$ Low$($$$30,000)$Less: Variable costs$50,000$times $$1\mathrm{.}10$ High$(55,009)20,000$times $$1\mathrm{.}10$ Low? $(\_\_\_\_)$Total fixed costs High? $$(\_\_\_\_)$ low? $$(\_\_\_)$