Direct Materials, Direct Labor, and Factory Overhead Cost Variance Analysis Mackinaw Inc. processes a base chemical into plastic. Standard costs and actual costs for direct materials, direct labor, and factory overhead incurred for the manufacture of 6,800 units of product were as follows: Standard Costs Actual Costs Direct materials 8,800 lb. at $5.20 8,700 lb. at $5.10 Direct labor 1,700 hrs. at $18.00 1,740 hrs. at $18.20 Factory overhead Rates per direct labor hr., based on 100% of normal capacity of 1,770 direct labor hrs.: Variable cost, $3.40 $5,720 variable cost Fixed cost, $5.40 $9,558 fixed cost Each unit requires 0.25 hour of direct labor Required: a. Determine the direct materials price variance, direct materials quantity variance, and total direct materials cost variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number. Direct materials price variance Direct materials quantity variance Total direct materials cost variance $ b. Determine the direct labor rate variance, direct labor time variance, and total direct labor cost variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number. Direct labor rate variance Direct labor time variance Total direct labor cost variance $ c. Determine variable factory overhead controllable variance, the fixed factory overhead volume variance, and total factory overhead cost variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number. Variable factory overhead controllable variance Fixed factory overhead volume variance Total factory overhead cost variance