Ruby Company produces a chair for which the standard specifies 6 yards of material per unit. The standard price of one yard of material is $13.60. During the month, 7,700 chairs were manufactured, using 45,300 yards at a cost of $12.92 per yard.

Determine the following: Enter favorable variances as negative numbers.

a. Direct materials price variance	$
b. Direct materials quantity variance	$
c. Total direct materials cost variance	$