Answer:
Controllable Variance = $6,000 Unfavorable
Volume Variance = $4000 Unfavorable
Factory overhead cost variance = $10,000 Unfavorable
Step-by-step explanation:
Controllable Variance = (Budgeted Factory Variable Overhead - Actual Factory Variable Overhead)
= ($234,000 - $240,000)
= $6,000 Unfavorable
Budgeted Factory Variable Overhead = ($394,000 - $160,000)
= $234,000
Volume Variance = (Standard Hours for Actual unit Produced - Standard Hour for normal Capacity) Fixed Factory Overhead)
=(19,500-20,000) × $8
= $4,000 Unfavorable
Controllable Variance = $6,000 Unfavorable
Volume Variance $4000 Unfavorable
Factory overhead cost variance = Controllable Variance + Volume Variance
= $6,000 + $4,000
= $10,000 Unfavorable