Contribution Margin by Segment

The following data are for Flat Bed Apparel:

$\backslash$table$[[,$East,West$],[$Sales volume $($units$)$:$,,],[$Product $xx,5,000,4,100],[$Product $YY,4,400,7,700]]$

Sales price:

Product XX

Product $Y$

Variable cost per unit:

Product XX

$$9,$$$9$

Product $YY$

$$11,$$$11$

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

$

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