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7 November, 17:28

There were m visitors in an exhibition on the first day and 1,200 fewer vistors on the second day. On the third day, the number of vistors was 30% greator than the number of vistors on the second day. What was the average number of vistors over the three days?

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  1. 7 November, 17:42
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    Step-by-step explanation:

    The average number is given by:

    [m + (m - 1200) + (m - 1200) (1.30 ] / 3 =

    [ 2m + 1.30m - 1200 - 1560] / 3 =

    [3.3m - 2760] / 3 =

    [1.1 m - 920 ]
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