Answer:
Variable Overhead Rate Variance - $55 favorable
Variable Overhead Efficiency Variance - $275 favorable
Over applied efficiency variance - $330 favorable
Step-by-step explanation:
The computations are shown below:
Variable Overhead Rate Variance = Actual Hours × (Actual Rate - Standard variable overhead Rate)
= 1,100 hours × ($2.70 - 2.75)
= $55 favorable
Variable Overhead Efficiency Variance = Standard variable overhead Rate × (Actual Hours - Standard Hours)
= $2.75 × (1,100 hours - 1 × 1,200)
= $275 favorable
So, the over-applied variable overhead would be
= $55 favorable + $275 favorable
= $330 favorable