Problem $12-22($Static$)$ Prepare a contribution margin format income statement; answer what$-$if questions LO $12-7,12-8,12-9,12-12$

Shown here is an income statement in the traditional format for a firm with a sales volume of $18,000$ units:

Revenues $ $108,000$

Cost of goods sold $($$$10,000+$ $$2\mathrm{.}80/$unit$)60,400$

Gross profit $ $47,600$

Operating expenses:

Selling $($$$2,200+$ $$1\mathrm{.}00/$unit$)20,200$

Administrative $($$$5,000+$ $$0\mathrm{.}40/$unit$)12,200$

Operating income $ $15,200$

Required:

Prepare an income statement in the contribution margin format.

Calculate the contribution margin per unit and the contribution margin ratio.

Calculate the firm$$s operating income $($or loss$)$ if the volume changed from $15,000$ units to

$20,000$ units.

$10,000$ units.

Refer to your answer to part a when total revenues were $$108,000.$ Calculate the firm$$s operating income $($or loss$)$ if unit selling price and variable expense per unit do not change and total revenues

Increase by $$15,000.$

Decrease by $$10,000.$