The first line graph compares the ratio of houses having 3 different electrical appliances, while the other line gra

The first line graph compares the ratio of houses having 3 different electrical appliances, while the other line graph illustrates the amount of time spent doing housework per week. Both charts comprise a hundred-year period from 1920 to 2019. Overall, there was a gradual increase in the percentage of houses with electrical appliances. In addition, housework time significantly dropped in this period. Originally, while less than 5% of houses had refrigerators, washing machines and vacuum cleaners were relatively commonplace with percentages of 40 and 30 respectively. In the following 20 years, however, refrigerator usage witnessed a dramatic rise, being present in 9 out of 10 houses, whereas the figure for the other appliances stood at 70%. By 2000, all houses had refrigerators, even though 7 out of 10 houses had washing machines. Regarding the other chart, an average household spent 50 hours doing housework in 1920. This number fell to 20 hours in 40 years before levelling off in the 1980s. Finally, the 2000s witnessed a slight decrease of 4 hours.