Answer:
Variable overhead efficiency variance= $7,000 favorable
Step-by-step explanation:
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= 9,000*2= 18,000 hours
Actual quantity= 16,000 hours
Standard rate= $3.5 per hour
Variable overhead efficiency variance= (18,000 - 16,000)*3.5
Variable overhead efficiency variance= $7,000 favorable