Correct Answer:
B. 720
Units made are proportional to days and machines. (600 units / (9 days * 20 machines)) = (X units / (12 days * 18 machines)). Solving for X gives 720 units, making other options incorrect calculations.
Units made are proportional to days and machines. (600 units / (9 days * 20 machines)) = (X units / (12 days * 18 machines)). Solving for X gives 720 units, making other options incorrect calculations.