Kibodeaux Corporation makes a product with the following standard costs:

	Standard Quality or Hours	Standard Price or Rate	Standard Cost Per Unit
Inputs
Direct materials	9.8 liters	$6.50 per liter	$63.70
Direct labor	0.1 hours	$23.50 per hour	$2.35
Variable overhead	0.1 hours	$4.50 per hour	$0.45

The company budgeted for production of 3,300 units in June, but actual production was 3,550 units. The company used 34,435 liters of direct material and 337 direct labor-hours to produce this output. The company purchased 35,640 liters of the direct material at $4.80 per liter. The actual direct labor rate was $24.20 per hour and the actual variable overhead rate was $4.20 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 June is?

Please explain. thank you :)