Mathematics
Mathematics, 08.07.2019 16:30, Svetakotok

Mr. duc asked to set up 450 chairs in a large hall. perry puts 20 chairs in each row. he has already set up 15 rows of chairs. how many chairs must he set up

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Mr. duc asked to set up 450 chairs in a large hall. perry puts 20 chairs in each row. he has already...

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