Rogen Corporation manufactures a single product The standard cost per unit of product is shown below. The predetermined manufacturing overhead rate is $10.00 per direct labor hour ($5.00+0.5). It was computed from a master manufacturing overhead budget based on normal production of 2,500 direct labor hours (5,000 units) for the month. The master budget showed total variable costs of $13,750 (\$5 50 per hour) and total fixed overhead costs of $11,250 (\$ 4.50 per hour). Actual costs for October In producing 3,000 units were as follows. The purchasing department bys the quantitles of row materials that are expected to be used in production each month. R m. materials imentorles, therefore, can be ignored. materials imventorles, therefore, can be ignored. The purchasing department buys the quantities of raw materials that are expected to be used in production each month. Raw materials inventories, therefore, can be ignored. (a) Compute all of the materials and labor variances. Totalmaterials variance $ Materials price variance $ Materials quantity variance \$ Total labor variance $ Labor price variance \$ Labor quantity variance $ (b) Compute the total overhead varlance. Total overhead variance $ eTextbook and Media