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

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

$\backslash$table$[[$Direct materials $($plastic$),$Standard Quantity,Standard Price $($Rate$),$Standard Unit Cost$],[$Direct labor,$8$ square foot,$ $1\mathrm{.}02$ per square foot,$ $8\mathrm{.}16],[$Variable manufacturing overhead $($based on direct labor hours$),0\mathrm{.}3$ hour,$$11\mathrm{.}10$ per hour,$3\mathrm{.}33],[$Fixed manufacturing overhead $($ $$383,880914,000$ units$),0\mathrm{.}3$ hour,$$2\mathrm{.}60$ per hour,$0\mathrm{.}78]]$

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

$\backslash$table$[[$Number of units produced and sold,$1,080,000$