Final answer:
The best production method is Method 1 with a total cost of $9,000. If the cost of labor rises to $200/unit, the company should still use Method 1 with a total cost of $14,000.
Step-by-step explanation:
Best Production Method:
The best production method can be determined by comparing the cost of labor and the cost of capital for each method. Method 1: 50 units of labor and 10 units of capital have a cost of $100/unit * 50 units of labor + $400/unit * 10 units of capital = $5,000 + $4,000 = $9,000. Method 2: 20 units of labor and 40 units of capital have a cost of $100/unit * 20 units of labor + $400/unit * 40 units of capital = $2,000 + $16,000 = $18,000. Method 3: 10 units of labor and 70 units of capital have a cost of $100/unit * 10 units of labor + $400/unit * 70 units of capital = $1,000 + $28,000 = $29,000.
Therefore, the best production method is Method 1 with a total cost of $9,000.
Rise in Labor Cost:
If the cost of labor rises to $200/unit, we can calculate the new costs for each method. Method 1: $200/unit * 50 units of labor + $400/unit * 10 units of capital = $10,000 + $4,000 = $14,000. Method 2: $200/unit * 20 units of labor + $400/unit * 40 units of capital = $4,000 + $16,000 = $20,000. Method 3: $200/unit * 10 units of labor + $400/unit * 70 units of capital = $2,000 + $28,000 = $30,000.
In this case, the company should use Method 1 even with the rise in labor cost because it still has the lowest total cost of $14,000.