Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. $($Hint: One way to find the missing amounts would be to prepare a contribution format income statement for each case, enter the known data, and then compute the missing items.$)$

Required:

a$.$ Assume that only one product is being sold in each of the following four case situations:

$\backslash$table$[[,$Case #$1,$Case #$2,$Case #$3,$Case #$4],[$Unit sold,$15,900,,,,10,600,,6,360],[$Sales$,190,800,$$$,106,000,,,$$$,318,000],[$Variable expenses,$127,200,,,,74,200,,],[$Fixed expenses,$53,000,,33,920,,,,106,000],[$Operating income $($loss$),,$$$,8,480,$$$,12,720,$$$,(10,600)$