Answer:
$10,800
Explanation:
The computation of effect on the quantity factor is shown below:-
Actual variable cost = 18,000 × $5
= $90,000
Planned variable cost = 16,000 × $5.40
= $86,400
Total change in contribution margin = Actual variable cost - Planned variable cost
$90,000 - $86,400
= $3,600
Change in quantity = 18,000 - 16,000
= 2,000 units
Effect on the quantity factor = Change in quantity × Cost per unit
= 2,000 units × $5.40
= $10,800