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Mathematics, 11.10.2020 01:01 shykim
Mr. Duc asked Perry 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 more chairs must he set up
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Mr. Duc asked Perry to set up 450 chairs in a large hall. Perry puts 20 chairs in each row. He has a...
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