I'm trying to calculate variable factory overhead controllable variance, fixed factory overhead volume variance, and total factory overhead cost variance I have already calculated price, quantity, materia,l rate, time, and labor variances

Direct Matena's, Direct Labor, and Factory Overhead Inge Analysis Road Gripper Fire do. manufactures automobile tires. Standard cats and actual costs for direct materials, direct labor, and factory overhead incurred for the manufacture of 4,160 tires were as follows: Standard Costs Actual Costs Direct materials 100,000 lbs. at $6.40 101,600 Ibs. at $6,50 Direct labor 2,080 hrs. at $15.75 2,000 hrs. at $15.40 Factory overhead Rates per direct labor hr., based on 100% of normal capacity of 2,000 direct labor hrs.: Variable cost, $4.00 $8,200 variable cost Fixed cost, $6.00 $12,000 fixed cost Each tire requires 0.5 hour of direct labor