Answer:
See below
Step-by-step explanation:
Given the above information,
Budgeted overhead at 90% capacity = 6,120 × 3 = $18,360
Budgeted overhead at 70% capacity = $15,640
DLH at 70% capacity = 6,120/90% × 70% = 4,760 hours
Variable overhead rate = ($18,360 - $15,640) / (6,120 - 4,760) = $2 per DLH
Actual hours in May = 5,000 DLH
Variable overhead efficiency variance =
(4,750 - 5,000) × $2 = $480 unfavorable