Original work only please!

ABC Firm uses a job costing system. OH is applied on the basis of DL dollars. At the beginning of 2020, the firm made the following estimates. Actuals as of the end of the year are also reported.

	estimates	actuals
direct labour hours	41,000	43,480
machine hours	207,000	196,600
direct labour	$732,000	$792,310
direct materials	863,000	858,200
overhead	2,457,000	2,491,200

On June 17, Job 403 was begun. It was completed on July 30. It required 5,400 machine hours and 960 DLH. Direct manufacturing costs were DM of $7,800 and DL of $21,210. The job sold for $125,000.

On November 11, Job 890 was begun. It was completed on November 21. It required 3,700 machine hours and 1,250 DLH. Direct manufacturing costs were DM of $7,400 and DL of $28,500. The job sold for $130,000.

Question:

1. Compute the cost of jobs 403 and 890.

2. Compute OH over or under applied for the year.

3. Now suppose that, instead of using DL$ as the OH application base, the firm were to use machine hours. Compute the cost of jobs 403 and 890.

4. If machine hours were the OH application base, what would be the amount of OH over or under applied?

5. Job 403 and Job 890 use resources in different amounts and should have different costs. When the OH application base is DL$, Job 890 appears to cost more than Job 403. When the OH application based is MH, Job 890 appears to cost less than Job 403. The cost of Job 403 is much the same no matter which OH application base is used, but the cost of Job 890 changes quite a bit.

Explain clearly why this is the case.