Rogen Corporation manufactures a single product. The standard cost per unit of product is shown below.

Direct materials1 pound plastic at $7.00 per pound		$ 7.00
Direct labor1.6 hours at $12.00 per hour		19.20
Variable manufacturing overhead		12.00
Fixed manufacturing overhead		4.00
Total standard cost per unit		$42.20

The predetermined manufacturing overhead rate is $10 per direct labor hour ($16.00 1.6). It was computed from a master manufacturing overhead budget based on normal production of 8,000 direct labor hours (5,000 units) for the month. The master budget showed total variable costs of $60,000 ($7.50 per hour) and total fixed overhead costs of $20,000 ($2.50 per hour). Actual costs for October in producing 4,800 units were as follows.

Direct materials (5,100 pounds)		$ 36,720
Direct labor (7,400 hours)		92,500
Variable overhead		59,700
Fixed overhead		21,000
Total manufacturing costs		$209,920

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. Compute the overhead controllable variance and the overhead volume variance.