Answer:
Variable overhead efficiency variance = $798.36 unfavorable
Step-by-step explanation:
Variable overhead efficiency variance is the difference between the actual time taken to achieve a given production output less the standard hours for same multiplied by the standard variable overhead rate
Since the variable overhead is charged using machine hours, any amount by which the actual labour hours differ from the standard allowable hours would result in a variance
Overhead absorption rate =Estimated overhead/estimated machine hours
105,300/5,500 machine hours = $19.14 per machine hour
$
5,580 hours should have cost (5,580× 19.14) 106,831.6
but did cost (actual cost ) 107,630
Variable overhead efficiency variance. 798.36 unfavorable
Variable overhead efficiency variance = $798.36 unfavorable