Vin Diesel owns the Fredonia Barber Shop. He employs $4$ barbers and pays each a base rate of $$1,250$ per month. One of the barbers serves as the manager and receives an extra $$500$ per month. In addition to the base rate, each barber also receives a commission of $$4\mathrm{.}50$ per haircut.

Other costs are as follows.

$\backslash$table$[[$Advertising$,$$$200,$per month$],[$Rent$,$$$1,100,$per month$],[$Barber supplies,$$0\mathrm{.}30,$per haircut$],[$Utilities$,$$$175,$per month plus $$0\mathrm{.}20$ per haircut$],[$Magazines$,$$$25,$per month$]]$

Vin currently charges $$10$ per haircut.

$($a$)$

Determine the variable costs per haircut and the total monthly fixed costs. $($Round variable costs to $2$ decimal places, $e2\mathrm{.}25.)$

Total variable cost per haircut $

Total fixed

$