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COVID-19 virus is spreading around the world. The management of ABC Lab is studying the costs for tests in the lab. ABC has received some

COVID-19 virus is spreading around the world. The management of ABC Lab is studying the costs for tests in the lab. ABC has received some complaints because the fees for lab tests are higher than its competitors. ABC has not used standard costs before. After you do the market research, you find the following worldwide averages for labs:

Containers: Four containers are required per lab test. These containers cost $4 each and will not be used again after the test is done.

Labour: Each saliva test should require 0.4 hours to complete, and each stool test should require 0.2 hours to complete. The average cost of this lab time is $20.5 per hour.

Overhead: Overhead cost is based on direct labour-hours. The average rate for variable overhead is $6 per hour.

Other useful information is extracted from ABC as follows:

  1. Two types of tests are performed in the lab saliva tests and stool tests. During the past month, 2,000 saliva tests and 2,700 stool tests were performed in the lab.

  2. Small containers are used in both types of tests. During the past month, the lab purchased 14,000 containers at a cost of $61,880. No container was on hand at the beginning of the month and two thousand of these containers were unused at the end of the month.

  3. The labs variable overhead cost last month totaled $12,006.

  4. During the past month, 1,450 hours of labour time were recorded in the lab at a cost

    of $29,000.

Required:

1. Calculate the materials price variance for the containers purchased last month and the materials quantity variance for the containers used last month (Hint: purchased units are not equal to used units). (14 marks)

2a. Calculate the labour rate variance and the labour efficiency variance. (14 marks)

2b. Almost one-half of the workers in the lab are senior technicians and one-half are assistants in most other labs. ABC employs only one-fifth senior technicians and four-fifths assistants to reduce costs. Would you suggest keeping this scheme? Explain with three reasons (less than 70 words). (12 marks)

3a. Calculate the variable overhead rate and efficiency variances. (12 marks)

3b. Are the variable overhead efficiency variance and the labour efficiency variance related? Explain with two reasons (less than 40 words). (8 marks)

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