The given line graphs illustrate the changes in ownership of washing machines, refrigerators, and vacuum cleaners and the amount of time spent completing housework in a particular country from 1920 to 2019.
Overall, upon analyzing the data, it is clear that all categories experienced an increase in ownership. Meanwhile, the number of hours of housework witnessed a significant decrease throughout the period.
In 1920, washing machine ownership dominated at 40%, vacuum cleaner ownership ranked second at 30%, and almost no home owned a refrigerator. By 1960, refrigerator ownership rose sharply, reaching 90%. Vacuum cleaner and washing machine ownership increased gradually, reaching 70% and 60%, respectively. By 2019, both refrigerators and vacuum cleaners were in 100% of households. In contrast, washing machine ownership saw some fluctuations, dropping slightly by 1980, before rising to about 75% by 2019.
Meanwhile, in 1920, a typical household spent 50 hours per week doing housework, which decreased consistently and reached 20 hours per week by 1960. The number declined further and reached 10 hours per week by 2019.