Preble Company manufactures one product. Its variable manufacturing overhead is applied to production based on direct labour-hours, and its standard costs per unit are as follows:

Direct materials: 6 kg at $8.00 per kg	$	48.00
Direct labour: 3 hours at $14 per hour		42.00
Variable overhead: 3 hours at $5 per hour		15.00
Total standard cost per unit	$	105.00

The company planned to produce and sell 19,000 units in March. However, during March the company actually produced and sold 24,000 units and incurred the following costs:

Purchased 160,000 kg of raw materials at a cost of $7.20 per kg. All of this material was used in production.

Direct labour: 60,000 hours at a rate of $15 per hour.

Total variable manufacturing overhead for the month was $336,600.

1. What is the materials price variance for March?

2. What is the materials quantity variance for March?

3. If Preble had purchased 175,000 kg of materials at $7.20 per kg and used 160,000 kg in production, what would be the materials price variance for March?

4. If Preble had purchased 175,000 kg of materials at $7.20 per kg and used 160,000 kg in production, what would be the materials quantity variance for March?

5. What is the labour rate variance for March?

6. What is the labour efficiency variance for March?