The chart illustrates the advancements made by three companies in refrigerator production efficiency between 1990 and 2000.
Throughout this decade, the time required by all three companies to manufacture a refrigerator decreased, with Company A and Company C experiencing more pronounced reductions than Company B. These changes led to a significant reshuffling of the companies’ rankings in terms of efficiency. If the trends continue, it is plausible that Company C could surpass Company B in productivity within a few years.
In 1990, Company A took 30 hours to produce a refrigerator, while Company C required 35 hours. By 2000, Company A had substantially shortened its production time to just over 22 hours, while Company C also achieved a considerable improvement, reducing its time to under 30 hours.
Meanwhile, the progress of Company B was marginal. Over the same period, its production time decreased only slightly, remaining approximately 25 hours, with little noticeable improvement.
