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23 August, 07:56

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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  1. 23 August, 08:12
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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 set up 15 rows of chairs

    Each row consists of 20 chairs

    He already set up 15 rows

    So number of chairs he already set up = chairs in each row * number of rows

    20 * 15 = 300

    So, he already set up 300 chairs

    Total chairs to set up is 450

    Remaining chairs to set up = 450 - 300 = 150

    So, 150 more chairs to set up
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