Answer:
Step-by-step explanation:
Fixed overhead rate = budgeted fixed manufacturing overhead
 budgeted production
 = 27000
 30000
 = $ 0.90 per unit
Absorbed Fixed overhead = Actual Output × Fixed overhead rate
 = 28000 × 0.90
 = 25200
Budgeted Fixed overhead = Budgeted Output × Fixed overhead rate
 = 30000 × 0.90
 = 27000
Fixed Overhead Volume Variance = Absorbed Fixed overhead - Budgeted Fixed overhead
 = | 25200 - 27000 |
 = $1800 ( unfavourable )