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:

b$.$ Assume that more than one product is being sold in each of the following four case situations: $($Enter "Contribution margin ratio

percent. Round your final answers to the nearest whole dollar amount.$)$