The charts below show the chanages in ownership of electrical appliances and amount of time spent doing housework in households in one country between 1920 and 2019.

The line graphs demonstrate the variation in the number of electrical household devices and the amount of spent

time

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on housework in one country during one century(1920-2019).

Overall

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, in the first diagram, there are 3 different devices, namely a vacuum cleaner washing machine and refrigerator. The amount of

this

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device increased in the showed period(1920-2019),

nevertheless

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, the number of

hours

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of housework per week decreased during that

time

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.

Initially

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, the refrigerator`s changes seem different from others. In 1920 there were very few people using

this

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instrument,

however

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, there was a sharp increase from 1920 to 1980 and

this

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instrument reached 100 percent in 1980. After 1980 there was not any change for

this

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device. The washing machine started at 40% in 1920, and after 20 years it was 60%.

Then

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this

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device`s use percentage grew by 70% until 1960, but from 1960 to 1980 decreased to approximately 65%. After that, we can see an increase in dynamics again until 2019 when the percentage grew from 65 to 75.

Secondly

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, the vacuum cleaner shows a steady increase dynamic from 1920 to 2000, respectively the use percentage rose from 30 to 100 and

then

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remained stable. The

time

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for using these devices started at 50

hours

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per week in 1920, and after 40 years decreased by 20

hours

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. After that, the

time

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spent slightly decreased again and dropped off by 10

hours

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per

week end

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weekend

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of the period.