Acme Company's production budget for August is 19,400 units and includes the following component unit costs: direct materials, [tex]$\$[/tex]100[tex]$; direct labor, $[/tex]\[tex]$12.5$[/tex]; variable overhead, [tex]$\$[/tex]6.0[tex]$. Budgeted fixed overhead is $[/tex]\[tex]$51,000$[/tex].

Actual production in August was 20,928 units. Actual unit component costs incurred during August include direct materials, [tex]$\$[/tex]10.50[tex]$; direct labor, $[/tex]\[tex]$12.00$[/tex]; variable overhead, [tex]$\$[/tex]6.50[tex]$. Actual fixed overhead was $[/tex]\[tex]$54,400$[/tex].

The standard variable overhead rate per unit consists of [tex]$\$[/tex]6.0[tex]$ per machine hour, and each unit is allowed a standard of 1 hour of machine time. During August, $[/tex]\[tex]$136,032$[/tex] of actual variable overhead cost was incurred for 21,255 machine hours.

Required:
Calculate the variable overhead spending variance and the variable overhead efficiency variance.

Note: Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance).

\begin{tabular}{|l|l|l|}
\hline Variable overhead spending variance & & U \\
\hline Variable overhead efficiency variance & & U \\
\hline
\end{tabular}

Certainly! Let's break down the solution step-by-step:

### Given Data:
1. Standard Rates and Information:
- Standard variable overhead rate per unit: $ \$6.0 $
- Each unit is allowed a standard of 1 hour of machine time.

2. Actual Information for August:
- Actual variable overhead cost: $ \$136,032 $
- Actual machine hours used: $ 21,255 $

### Calculations:
1. Standard Variable Overhead Rate Per Hour:
- The standard variable overhead rate per unit given is $ \[tex]$6.0 $. Since each unit is allowed 1 hour of machine time, the standard rate per hour is also $ \$[/tex]6.0 $.

2. Standard Variable Overhead Cost for Actual Hours:
- We calculate this by multiplying the actual machine hours by the standard variable overhead rate per hour.
[tex]\[ \text{Standard Cost} = \text{Actual Machine Hours} \times \text{Standard Variable Overhead Rate} \][/tex]
[tex]\[ \text{Standard Cost} = 21,255 \text{ hours} \times \[tex]$6.0 \text{ per hour} = \$[/tex]127,530
\][/tex]

3. Variable Overhead Spending Variance:
- The spending variance tells us if there was a difference between the actual overhead costs and what was expected given the actual hours worked.
[tex]\[ \text{Spending Variance} = \text{Actual Variable Overhead Cost} - \text{Standard Cost} \][/tex]
[tex]\[ \text{Spending Variance} = \[tex]$136,032 - \$[/tex]127,530 = \$8,502
\][/tex]
- The variance is $ \$8,502 $. Since the actual costs are higher than the standard costs, this variance is unfavorable.
[tex]\[ \text{Spending Variance Effect} = 'U' \][/tex]

4. Variable Overhead Efficiency Variance:
- Efficiency variance measures the efficiency in using the machine hours based on the standard allowed hours. Given that each unit is allowed 1 hour and all 21,255 hours matched the standard rate, the efficiency variance is zero.
[tex]\[ \text{Efficiency Variance} = 0 \][/tex]
- This is because the standard allowed hours match the actual hours used. Hence, there is no variance.
[tex]\[ \text{Efficiency Variance Effect} = 'None' \][/tex]

### Final Results:
[tex]\[ \begin{array}{|l|l|l|} \hline \text{Variable overhead spending variance} & \$8,502 & U \\ \hline \text{Variable overhead efficiency variance} & 0 & None \\ \hline \end{array} \][/tex]

To summarize:
- The variable overhead spending variance is \$8,502 and it is unfavorable (U).
- The variable overhead efficiency variance is 0, indicating no effect (None).