Answer:
2. $81
Explanation:
According to the situation the computation of weighted-average unit contribution margin is here below:-
Q Drive Q Drive Plus
Selling price $135 $180
Variable cost $75 $90
Contribution margin
per unit $60 $90
Sales mix 30% 70%
$18 $63
The weighted-average unit contribution margin = Q Drive + Q Drive Plus
= $18 + $63
= $81