Answer:
$24,160 favorable
Explanation:
The computation of the total contribution margin sales volume variance is given below:
The Budgeted contribution margin per pound of MT is
= $40 - $20
= $20 per pound
Now the budgeted contribution margin per pound of ET is
= $60 - $30
= $24 per pound
MT's contribution margin sales volume variance is
= (Actual sales quantity - Budgeted sales quantity) × Budgeted contribution margin per pound
= (3960 - 4000) × $20
= $800 Unfavorable
ET's contribution margin sales volume variance is
= (Actual sales quantity - Budgeted sales quantity) × Budgeted contribution margin per pound
= (5,040 - 4000) × $24
= $24,960 favorable
Now the total contribution margin sales volume is
= $800 unfavorable + $24,960 favorable
= $24,160 favorable