Information: A copy company wants to expand production. It currently has 20 workers who share eight copiers. Two months ago, the firm added two copiers, and output increased by 100,000 copies per day. One month ago, they added five workers, and productivity also increased by 50,000 copies per day. Copiers cost about twice as much as workers.

Question: Would you recommend they hire another employee or buy another copier?

It doesn't seem like there is enough information in the question to answer. Based on efficiency, I would say buy another copier. Can you help explain?