E$9-10($Algo$)$ Calculating Variable Overhead Variances $[$LO $9-5]$

Parker Plastic, Incorporated, manufactures plastic mats to use with rolling office chalirs. Its standard cost information for last year follows:

Parker Plastic had the following actual results for the past year:

Required:

Calculate Parker Plastic's varlable overhead rate and efficiency variances and its over$-$ or underapplied varlable overhead.

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