three pie charts below show the changes in annual spending by a particular UK school in 1981, 1991, and 2001. summarize the information and make comparison.

These provided pie charts illustrate the changes in the annual expenses of a specific school in the UK in three different years, in 1981, 1991, and 2001.

Overall

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, it can be seen that the total school expenditures were mainly composed of five items, and there was a change in the spending for each item across the given three years.

To begin

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, in 1981, teachers’ salaries took the highest percentage of spending, at 40%, and even though they increased to 50%, in 1991, they experienced a slight drop to 45%, in 2001.

In addition

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to that, the salaries of other workers accounted for the second ratio of expenses, at 28%, in 1981,

then

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; they reduced to 22%, in 1991 and to 15% in 2001. Regarding furniture and equipment and resources

such

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as books, in 1981, the cost of expenses for each one was at the same ratio of 15%, but there was a fluctuation for both of them in 1991, the ratio of spending on resources elevated to 20%,

then

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; it reduced to 9%, in 2001,

whereas

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in 1991 the percentage of expenditures on furniture and equipment dropped to 5%, and

then

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increased, in 2001.