Direct Materials, Direct Labot, and Factory Overhead Cost Variance Analysis Road Gripper Tire Co. manufactures automobile tires. Standard costs and actual costs for direct materials, direct laboc; and factory overhead incurred for the manufacture of 4,160 tires were as follows: 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. b. Determine the direct labor rate variance, drect 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. Determine the varioble foctory ov The cost astociated with the difference between standard and actual hours of direct labor spent for producing a commodit variance as a negative number using a minus sigh and an unfavorable varlance as a posklve number