Answer:
Using the given information, we can calculate the following:
Calculate the standard fixed overhead rate per unit:
Standard fixed overhead rate per unit = Budgeted fixed factory overhead costs / Practical capacity in units
= $250,000 / 25,000 units
= $10 per unit
Calculate the total standard overhead cost per unit:
Total standard overhead cost per unit = Fixed overhead cost per unit + Variable overhead cost per unit
= $10 + $4
= $14 per unit
Calculate the total actual overhead cost per unit:
Total actual overhead cost per unit = Actual fixed overhead cost per unit + Actual variable overhead cost per unit
= ($245,000 / 20,000 units) + $3.90
= $12.25 + $3.90
= $16.15 per unit
Calculate the overhead variance:
Total overhead variance = Actual overhead cost - Standard overhead cost
= (Actual fixed overhead cost + Actual variable overhead cost) - (Standard fixed overhead cost + Standard variable overhead cost)
= ($245,000 + (20,000 x $3.90)) - ((20,000 x $10) + (20,000 x $4))
= $330,000 - $240,000
= $90,000 unfavorable variance
Therefore, the overhead variance for the year is $90,000 unfavorable. This indicates that the actual overhead cost per unit was higher than the standard overhead cost per unit, which could be due to various factors such as increased machine hours, higher variable overhead costs, or inefficient use of fixed overhead costs.
Hope this helps!