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

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

Number of units produced and sold $1,020,000$

Number of square feet of plastic used $12,900,000$

Cost of plastic purchased and used $$16,770,000$

Number of labor hours worked $,338,000$

Direct labor cost $$4,258,800$

Variable overhead cost $$1,760,000$

Fixed overhead cost $ $395,000$

Required:

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