Mathematics, 16.06.2021 19:10 vkrizh

In a school of 1800 students, the ratio of teachers to students is 1:20. Some teachers join the school and the ratio changes to 1:18.
Find the number of teachers who joined the school

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In a school of 1800 students, the ratio of teachers to students is 1:20. Some teachers join the sch...

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