Exercises $15-27($Algo$)$ Fixed Overhead Rate; Denominator Level; Two$-$Variance Breakdown of Total Factory Overhead Cost Variance $[$LO $15-1,15-2]$

Overhead information for Cran$-$Mar Company for October follows:

Total factory overhead cost incurred$ $16,500$Budgeted fixed factory overhead cost$ $4,900$Total standard overhead rate per machine$-$hour $($MH$)$$ $4\mathrm{.}99$Standard variable factory overhead rate per MH$ $3\mathrm{.}90$Standard MHs allowed for the units manufactured$4,700$

Required:

What is the standard fixed factory overhead rate per machine hour $($MH$)?$

What is the denominator activity level that was used to establish the fixed factory overhead application rate?

Two$-$way analysis $($breakdown$)$ of the total factory overhead cost variance: calculate the following factory overhead cost variances for October and indicate whether each variance is favorable $($F$)$ or unfavorable $($U$).$

Total flexible$-$budget variance.

Production volume variance.

Total overhead cost variance.

Calculate the production volume variance and indicate whether the variance is favorable $($F$)$ or unfavorable $($U$).$