Blue Co. makes a product with the following standard costs:

	Standard Quantity or Hours	Standard Price or Rate
Direct materials	7.4 grams	$8.00 per gram
Direct labor	0.3 hours	$16.00 per hour
Variable overhead	0.3 hours	$7.00 per hour

The company reported the following results concerning this product in July.

Actual output	2,200	units
Raw materials used in production	16,420	grams
Purchases of raw materials	17,900	grams
Actual direct labor-hours	720	hours
Actual cost of raw materials purchases	$141,410
Actual direct labor cost	$12,528
Actual variable overhead cost	$5,112

The company applies variable overhead on the basis of direct labor-hours. The direct materials purchases variance is computed when the materials are purchased. E) Compute the variable overhead efficiency variance. F) Compute the variable overhead rate variance