Acme Inc. has the following information available:

Actual price paid for material	$0.90
Standard price for material	$1.00
Actual quantity purchased and used in production	100
Standard quantity for units produced	110
Actual labor rate per hour	$15
Standard labor rate per hour	$16
Actual hours	210
Standard hours for units produced	240

A. Compute the material price and quantity, and the labor rate and efficiency variances. Enter all amounts as positive numbers.

Material price variance	$
Material quantity variance	$
Labor rate variance	$
Labor efficiency variance	$

B. What are some possible causes for this combination of favorable and unfavorable variances?