Contribution Margin by Segment

The following data are for Moss Creek Apparel:

$\backslash$table$[[,$East,West$],[$Sales volume $($units$)$:$,,],[$Product $xx,9,300,7,800],[$Product $YY,4,700,9,400]]$

Sales price:

Product XX

$$15,$$$16$

Product $YY$

$$21,$$$19$

Variable cost per unit:

Product XX

$$9$

$$9$

Product YY

$$13$

$$13$

a$.$ Determine the contribution margin for Product $YY.$

$

b$.$ Determine the contribution margin for the West Region.