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23 June, 10:17

Mason counted an average of 18 birds at his bird feeder each day for 20 days. Rosa counted an averge of 21 birds at her bird feeder each day for 16 days. How many more birds did Mson count at his feeder than Rosa couted at hers?

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  1. 23 June, 12:14
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    Mason counted 24 more birds at his feeder than Rosa counted at hers

    Step-by-step explanation:

    Average = Total or sum/number of items

    Therefore, Total or sum = Average * number of items

    For Mason,

    An average of 18 birds in 20 day is equivalent to a total of

    Total birds = 18 * 20

    = 360 birds

    For Rosa,

    An average of 21 birds each day for 21 days is equivalent to a total of

    Total birds = 21 * 16

    = 336 birds

    Difference between the total number of birds for Mason and Rosa

    = 360 - 336

    = 24 birds
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