Dillman Labs, provides mad cow disease testing for both state and federal government agricultural agencies. Because the company's customers are governmental agencies, prices are strictly forced. Therefore, Dillman's Labs must constantly monitor and control its testing costs. Shown below are the standard costs for a typical test.
- Direct materials (2 test tubes @ $1.50 per tube) $3
- Direct labor (1 hour @ $25 per hour) 25
- Variable overhead (1 hour @ $5 per hour) 5
- Fixed overhead (1 hour @ $10 per hour) 10
- Total standard cost per test $43
The lab does not maintain an inventory of test tubes. Therefore, the tubes purchased each month are used that month. Actual activity for the month of November 2012, when 1,500 tests were conducted, resulted in the following:
- Direct materials (3,050 test tubes) $ 4,270
- Direct labor (1,600 hours) 36,800
- Variable overhead 7,400
- Fixed overhead 14,000
Monthly budgeted fixed overhead is $14,000. Revenues for the month were $75,000, and selling and administrative expenses were $4,000.
(a) Compute the price and quantity variances for direct materials and direct labor.
(b) Compute the total overhead varience.
(c)Calculate the manufacturing overhead controllable variance and the manufacturing overhead volume variance as well as the total manufacturing overhead variance.