Answer:
$484 U
Explanation:
The variable overhead efficiency variance is computed as
= (Actual labor hours - Budgeted labor hours) × Hourly rate for standard variable overhead
Variable overhead efficiency variance
= [(4,260 - (8,300×0.5)] × $4.40
= (4,260 - 4,150) × $4.40
= $484 U
Therefore, the variable overhead efficiency variance for August is $484 U