Answer:
$13.90
Explanation:
The computation of total variable manufacturing cost per unit is shown below:-
Production volume a $3,000 $4,000
Direct material $86.30 $86.30
Direct labor $26,40 $26.40
Manufacturing overhead b $75.90 $60.40
Total cost a × b $227,700 $241,600
Difference in total cost c $13,900
Difference in production volume d 1,000 units
Variable cost per unit c ÷ d $13.90