Marvel Parts Inc. manufactures auto accessories. One of the company's products is a set of seat covers that can be adjusted to fit nearly any small car. The company has a standard cost system in use for all of its products. According to the standards that have been set for the seat covers, the factory should work 2,850 hours each month to produce 1,900 sets of covers. The standard costs associated with this level of production are as follows:

At standard, each set of covers should require 5.6 metres of material. All of the materials purchased during the month were used in production.

Required:
Compute the following variances for August:
1. The materials price and quantity variances.
2. The labour rate and efficiency variances.
3. The variable overhead spending and efficiency variances

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Direct materials... Direct labour.. Variable manufacturing overhead (based on direct labour-hours) Total $42,560 $17,100 Direct materials (12,000 metres)... Direct labour..... Variable manufacturing overhead.. $ 6,840 Total Per Set of Covers During August, the factory worked only 2.800 direct labour-hours and produced 2,000 sets of covers. The following actual costs were recorded during the month: $45,600 $18,200 $ 7,000 $22.40 9.00 3.60 $35.00 Per Set of Covers $22.80 9.10 3.50 $35.40