I am struggling to fill out the Alternative Computation of Overhead Variances. Everything else I've provided for context.

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Alternative Computation of Overhead Variances: Direct materials, direct labor, and factory overhead cost variance analysis Obj. 3,4 Road Gripper Tire Co. manufactures automobile tires. Standard costs and actual costs for direct materials, direct labor, and factory overhead incurred for the manufacture of 4,160 tires were as follows: Each tire requires 0.5 hour of direct labor. Instructions Determine (a) the direct materials price variance, direct materials quantity variance, and total direct materials cost variance; (b) the direct labor rate variance, direct labor time variance, and total direct labor cost variance; and (c) the variable factory overhead controllable variance, fixed factory overhead volume variance, and total factory overhead cost variance. a. b. \begin{tabular}{|c|c|c|c|} \hline \multicolumn{4}{|c|}{ Direct Labor Cost Variance } \\ \hline \multicolumn{4}{|l|}{ Rate variance: } \\ \hline Actual rate per hour & $15.40 & & \\ \hline Standard rate per hour & 15.75 & & \\ \hline Variance & ($0.35) & & \\ \hline Actual hours & 2.000 & & \\ \hline Direct labor rate variance & & (700) & favorable \\ \hline \multicolumn{4}{|l|}{ Time variance: } \\ \hline Actual direct labor hours & 2,000 & & \\ \hline Standard direct labor hours & 2,080 & & \\ \hline Variance & (80) & & \\ \hline Standard rate per hour & $15.75 & & \\ \hline Direct labor time variance & & (1,260) & favorable \\ \hline \multicolumn{2}{|l|}{ Total direct labor cost variance } & 5(1,960) & favorable \\ \hline \multicolumn{4}{|c|}{ Factory Overhead Cost Variance } \\ \hline \multicolumn{4}{|l|}{ Variable factory overhead controliablo variance: } \\ \hline Actual varlable FO cost incurred & 8,200 & & \\ \hline \multicolumn{4}{|l|}{\begin{tabular}{l} Budgeted variable fo cost for 2,080hrs. \\ Variance \end{tabular}} \\ \hline Variance & & (120) & favorable \\ \hline \multicolumn{4}{|l|}{ Fixed factory overhead volume variance: } \\ \hline Hours at normal capacity & 2,000 & & \\ \hline Standard hours for amount produced & 2.080 & & \\ \hline Productive capacity not used & (80) & & \\ \hline Standard fixed FO cost rate & $6.00 & & \\ \hline Variance & & (480) & favorable \\ \hline Total factory overhead cost variance & & \begin{tabular}{|l|l|} 5 & (600) \\ \end{tabular} & favorable \\ \hline \end{tabular}