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21 July, 12:48

6) Maria bought seven boxes. A week later

half of all her boxes were destroyed in a fire.

There are now only 22 boxes left. With

how many did she start?

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Answers (1)
  1. 21 July, 13:01
    0
    37

    Step-by-step explanation:

    Maria started with x boxes.

    When she bought 7 boxes, she has (x+7).

    Half of her boxes are destroyed (x+7) / 2.

    Half of her boxes left (x+7) / 2.

    And

    (x+7) / 2 = 22

    x+7=44

    x = 44 - 7 = 37
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