The given chart illustrates the comparison of how much time the mentioned companies spent on producing a refrigerator in 1990 and 2000. Overall, Company C took the longest time in their products during 1990, which was 35 hours per refrigerator. After that, Company C sped up to about 30 hours on producing a fridge after 10 years. However, Company C remained the first place and spent more time than another two companies.
In terms of Company A, it originally spent 30 hours on each product during 1990. Moving on to 2000, Company A was having a smooth deduction on their manufacturing time, which took them around 22 hours to make one refrigerator. Hence, Company A became the company that spent the shortest time on one product in 2000.
In addition, Company B didn’t have any increase or decrease in their production time. Initially, Company B took 26 hours to finish a product, and the situation remained similar the same after 10 years. Company B still spent about 26 hours to make a refrigerator.