I am having a very tough time figuring this problem out for managerial accounting

Maredo Leather Company manufactures top quality leather used by Roe and Adler, LLC in their manufacture of airplane seat covers. The production manager at Maredo has been under pressure from the company president to reduce the cost of conversion.In spite of several attempts to reduce conversion costs, they have remained more or less constant.Now the manager is faced with an upcoming meeting with the company president, where he will have to explain his failure to reduce conversion costs.The manager goes to the company controller with the following request.He explains that he is under pressure to reduce cost in the production process, but there is no way to reduce material costs.He explains that if he can just show a little progress in his meeting with the president then he can buy some time to try some other cost-saving measures.He asks the controller to raise the estimate of the percentage of completion of the ending inventory for the month to 60 percent.This will increase the number of equivalent units and the unit conversion cost will be a little lower.Use the following to answer the questions below:

October 1 Work-in-Process 400 units

Conversion 25% complete

Inventory costs as of Oct 1:

Leather$990Dye260Conversion costs300Total$1,550

During October 7,600 leather fabric pieces were placed into production. A total of 7,000 leather fabric pieces were completed. The work-in-process inventory on October 31 consisted of 1,000 leather fabric pieces with were 50 percent complete to conversion. The costs charged to production during October were:

Leather$19,990Dye5,250Conversion costs20,700Total$45,850