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

Standard Quantity Standard Price $($Rate$)$ Standard Unit Cost

Direct materials $($plastic$)13$ square foot $ $0\mathrm{.}93$ per square foot $ $12\mathrm{.}09$

Direct labor $0\mathrm{.}3$ hour $ $10\mathrm{.}90$ per hour $3\mathrm{.}27$

Variable manufacturing overhead $($based on direct labor hours$)0\mathrm{.}3$ hour $ $2\mathrm{.}40$ per hour $0\mathrm{.}72$

Fixed manufacturing overhead $($$$364,800-$: $912,000$ units$)0\mathrm{.}40$

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

Number of units produced and sold $1,060,000$

Number of square feet of plastic used $11,500,000$

Cost of plastic purchased and used $ $10,350,000$

Number of labor hours worked $310,000$

Direct labor cost $ $3,565,000$

Variable overhead cost $ $780,000$

Fixed overhead cost $ $367,000$

Required:

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

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$).$