Answer:
a.
General Plant Management Costs
Cost is $100,000
These costs are allocated on the basis of number of production employees.
Melting Department employs 35 workers and Molding employs 40 for a total of 75.
Melting Department = 
Melting Department = $46,666,67
Molding Department = 
Molding Department = $53,333.33
Plant Security Costs
Cost is $50,000
These costs are allocated on the basis of space occupied by the production departments.
Melting Department occupies 10,000ft² and Molding occupies 20,000 ft² for a total of 30,000 ft²
Melting Department = 
Melting Department = $16,666,67
Molding Department = 
Molding Department = $33,333.33
2. Melting Department
= 110.000 + 46,666.67 + 16,666.67
= $173,333.34
Molding Department
= 400,000 + 53,333.33 + 33,333.33
= $486,666.66