Answer:
The weighted-average unit contribution margin is $7.718.
Step-by-step explanation:
A firm makes two products, A and B.
The sales mix in units for the period is 70% for A and 30 % for B.
The unit contribution margin for A is $8.75 and the unit contribution margin for B is $5.31.
The weighted-average unit contribution margin is
=

= 6.125 + 1.593
= 7.718