Standard Quantity or Hours			Standard Price or Rate			Standard Cost Per Unit
Direct materials		7.0	ounces	$	4.00	per ounce	$	28.00
Direct labor		0.7	hours	$	14.00	per hour	$	9.80
Variable overhead		0.7	hours	$	9.00	per hour	$	6.30

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

Actual output		2,900	units
Raw materials used in production		21,000	ounces
Purchases of raw materials		21,900	ounces
Actual direct labor-hours		2,000	hours
Actual cost of raw materials purchases	$	89,790
Actual direct labor cost	$	32,400
Actual variable overhead cost	$	3,200

Calculate the following variances:

Materials price variance

Materials quantity variance

Labor rate variance

Labor efficiency variance