Calculate the variable overhead efficiency variance. Select the formula, then enter the amounts and compute the efficiency variance for variable overhead and identify whether the variance is favorable (F) or unfavorable (U). ( - ) = VOH Efficiency Variance Etext pages Calculator Ask my instructor pop-up content starts Data table Variable overhead cost standard $0.50 per DLHr Direct labor efficiency standard 7.50 DLHr per shirt Actual amount of direct labor hours 10,560 DLHr Actual cost of variable overhead $7,392 Fixed overhead cost standard $0.40 per DLHr Budgeted fixed overhead $4,425 Actual cost of fixed overhead $4,500