Answer:
Efficiency variance $2,650 unfavorable
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 whether or not their exist savings or extra cost incurred on variable overhead as a result of workers being faster or slower that expected.
Since the variable overhead is charged using labour hours, any amount by which the actual labour hours differ from the standard allowable hours would result in a variance
Hours
130,000 units should have taken 9,000
but did take (actual hours) 9,500
Efficiency variance 500 unfavorable
Standard variable overhead rate $5.30
Efficiency variance $2,650 unfavorable