Answer:
b.$52,000 F and $12,000 U.
Explanation:
The computation is shown below:
Variable overhead spending variance
= (Standard variable overhead Rate × Actual Hour) - (Actual Rate × Actual Hour)
= ($6 × 32,000 hours) - ($140,000)
= $192,000 - $140,000
= $52,000 favorable
The (Actual Rate × Actual Hour) is also known as Actual variable overhead
Variable overhead efficiency variance
= (Standard Rate × Standard Hour) - (Standard Rate × Actual Hour)
= ($6 × 0.75 × 40,000 hours) - ($6 × 32,000 hours)
= $180,000 - $192,000
= $12,000 unfavorable