Answer:
The correct option is D
Variable overhead efficiency variance $1,549.17 unfavorable
Step-by-step explanation:
Variable overhead efficiency variance: A variance is the difference between a standard cost and the actual cost. Variable overhead efficiency variance aims to determine the savings or extra cost incurred on variable overhead as a result of workers being faster or slower that expected.
To calculate this variance, we do as follows:
Standard variable overhead rate per hour
= Budgeted Variable overhead cost/Budgeted direct labour hours
= $13,500/610 hours
= $22.1311
Hours
4,100 units should have taken(4,100 × 0.1) = 410
but did take (i.e actual hours) 480
Efficiency variance in hours 70 unfavorable
Standard rate × $22.131
Variable overhead efficiency variance $1,549.17 unfavorable