Answer:
Variable overhead efficiency variance= (Standard Quantity - Actual Quantity)*Standard rate
Step-by-step explanation:
We weren't provided with enough information to calculate the variable overhead efficiency variance. But, I will provide the formula.
To calculate the variable overhead efficiency variance, we need to use the following formula:
Variable overhead efficiency variance= (Standard Quantity - Actual Quantity)*Standard rate
Standard quantity= number of units produced*standard machine-hours