Answer:
Variable overhead efficiency variance= $100,000 unfavorable
Explanation:
Giving the following information:
200,000 machine‐hours are budgeted for variable overhead at a standard rate of $5/machine‐hour, but 220,000 machine‐hours were used.
To calculate the variable overhead efficiency variance, we need to use the following formula:
Variable overhead efficiency variance= (Standard Quantity - Actual Quantity)*Standard rate
Variable overhead efficiency variance= (200,000 - 220,000)*5
Variable overhead efficiency variance= $100,000 unfavorable