Chilton, Incorporated, sold $11,000$ units last year for $$20$ each. Variable costs per unit were $$4$ for direct materials, $$1\mathrm{.}50$ for direct labor, and $$2\mathrm{.}50$ for variable overhead. Fixed costs were $$60,000$ in manufacturing overhead and $$40,000$ in nonmanufacturing costs.

Required:

a$.$ What is the total contribution margin?

b$.$ What is the unit contribution margin?

c$.$ What is the contribution margin ratio?

d$.$ If sales increase by $2,000$ units, by how much will profits increase?

$\backslash$table$[[$a$.$ Total Contribution Margin,,$],[$b$.$ Unit Contribution Margin,,$],[$c$.$ Contribution Margin Ratio,,$\%$