K-Rod Corporation uses a standard cost system and manufactures one product. The variable costs per product follow:

Materials (4 parts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 2

Labor (2 hours) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Overhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

..................................$11

Budgeted fixed costs for the month are $4,000, and K-Rod expected to manufacture 2,000 units. Actual production, however, was only 1,800 units. Materials prices were 10% over standard, and labor rates were 5% over standard. Of the factory overhead expense, only 80% was used, and fixed overhead was $100 over the budgeted amount. The actual variable overhead cost was $4,800. In materials usage, 8% more parts were used than were allowed for actual production by the standard, and 6% more labor hours were used than were allowed.

Required:

1. Calculate the materials and labor variances.

2. Calculate the variances for overhead by the four-variance method.