Famous Face Dolls Company manufactures and sells custom dolls through a network of specialty stores. The face of each doll is hand$-$painted by a highly skilled craftsperson in the image of a popular public figure. Large dolls $(75-80$ cm$)$ sell for $$150$ each and have a unit variable cost of $$90.$ Each large doll requires $30$ minutes of painting time. Small dolls $(40-45$ cm$)$ sell for $$100$ and have a unit variable cost of $$64\mathrm{.}00.$ Each small doll requires $15$ minutes of painting time. Typical demand is $200$ large dolls and $500$ small dolls per month. Due to upcoming vacations, the amount of available face$-$painting time is limited to $180$ hours for the next month.

The contribution margin per hour of painting time is:

Question $9$Answer

a$.$

$$180/$hour for large dolls and $$256/$hour for small dolls

b$.$

$$300/$hour for large dolls and $$400/$hour for small dolls

c$.$

$$2\mathrm{.}00/$hour for large dolls and $$2\mathrm{.}40/$hour for small dolls

d$.$

$$120/$hour for large dolls and $$144/$hour for small dolls