From the following information for Alfred Industries, compute the overhead spending variance and the volume variance. From the following information for Alfred industries, compute the overhead spending variance and the volume variance. Standard manufacturing overhead based on normal Monthly volume: Fixed ($300,000 / 20,000units). $15.00 Variable ($100,000 / 20,000units).. 5.00 $20.00 Units actually produced in current month.. 18,000 units Actual overhead costs incurred (including $300,000fixed).. $383,800