Final answer:
The best production method is Method 2, with a total cost of $18,000. If the cost of labor rises to $200 per unit, the best production method becomes Method 1, with a total cost of $14,000.
Step-by-step explanation:
To determine the best production method, we need to compare the total cost of each method. Method 1 requires 50 units of labor and 10 units of capital, while Method 2 requires 20 units of labor and 40 units of capital, and Method 3 requires 10 units of labor and 70 units of capital. Given that labor costs $100 per unit and capital costs $400 per unit, we can calculate the total cost for each method. Method 1: (50 units of labor x $100/unit) + (10 units of capital x $400/unit) = $5,000 + $4,000 = $9,000. Method 2: (20 units of labor x $100/unit) + (40 units of capital x $400/unit) = $2,000 + $16,000 = $18,000. Method 3: (10 units of labor x $100/unit) + (70 units of capital x $400/unit) = $1,000 + $28,000 = $29,000.
Therefore, Method 2 is the best production method as it has the lowest total cost of $18,000.
If the cost of labor rises to $200 per unit, we can recalculate the total cost for each method. Method 1: (50 units of labor x $200/unit) + (10 units of capital x $400/unit) = $10,000 + $4,000 = $14,000. Method 2: (20 units of labor x $200/unit) + (40 units of capital x $400/unit) = $4,000 + $16,000 = $20,000. Method 3: (10 units of labor x $200/unit) + (70 units of capital x $400/unit) = $2,000 + $28,000 = $30,000.
Therefore, if the cost of labor rises to $200 per unit, Method 1 becomes the best production method with a total cost of $14,000.