Ortman Corporation makes a product with the following standard costs:

	Standard Quantity or Hours		Standard Price or Rate
Direct materials	7.6	liters	$11.00	per liter
Direct labor	1.0	hours	$26.00	per hour
Variable overhead	1.0	hours	$2.00	per hour

The company reported the following results concerning this product in May:

Actual output	2,600	units
Raw materials used in production	19,500	liters
Actual direct labor-hours	2,485	hours
Purchases of raw materials	21,450	liters
Actual price of raw materials purchased	$ 7.80	per liter
Actual direct labor rate	$25.10	per hour
Actual variable overhead rate	$1.40	per hour

The company applies variable overhead on the basis of direct labor-hours. The direct materials purchases variance is computed when the materials are purchased. The labor rate variance for May is: