Please help me understand the following, thank you!

During FY 2018, Adelphi Company reported sales of $400,000, a contribution margin of $10.00 per unit, fixed costs of $95,000, and net income of $40,000. Use this information to determine the number of units Adelphi sold during FY 2018.(Round answer to nearest whole number)

Towson Company manufactures book cases, and each requires 38 board feet of lumber. Towson expects that 2,000 and 1,650 book cases will be built in June and July, respectively.Towson keeps lumber on hand at 30% of the next month's production needs. Use this information to determine number board feet of lumber that Towson Company should buy in June. (Round & enter final answers to the nearest whole number.)

Annapolis Company has two service departments (Computer Operations & Maintenance Services).Annapolis has two production departments (Mixing Department & Packaging Department.)Annapolis uses a direct allocation method where service departments are allocated only to production departments.All allocations are based on total employees.Computer Operations has costs of $110,000 andMaintenanceServices has costs of $115,000 before any allocations.What amount of Maintenance Services total cost is allocated to the Packaging Department?(round to closest whole dollar) Employees are:

Computer Operations3

Maintenance Services4

Mixing Department4

Packaging Department6