The Rogers Company Uses a Standard Cost Accounting System and Estimates

The Rogers Company uses a standard cost accounting system and estimates production for the year to be 60,000 units. At this volume, the company's variable overhead costs are $0.50 per direct labor hour.
The company's single product has a standard cost of $30.00 per unit. Included in the $30.00 is $13.20 for direct materials (3 yards) and $12.00 of direct labor (2 hours). Production information for the month of March follows:
$$\begin{array} { l r } \text { Nurnber of units produced } & 6,000 \\\text { Materials purchased (18,500yards) } & \$ 88,800 \\\text { Materials used in production (yards) } & 18,500 \\\text { Direct labor cost incured (\$6.50/hour) } & \$ 75,400\end{array}$$
Required:
(Be sure to indicate whether the variances are favorable or unfavorable and show your work.)
a. Compute the direct material price variance.
b. Compute the direct material efficiency variance.
c. Compute the direct labor price (rate) variance.
d. Compute the direct labor efficiency variance.