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guess and check

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there are 42 question on lindas test. sum of the questions are 2 point and sum were 3 points. she got a perfect score

  • guess and check -

    Let the number of 2 point questions be x
    then the number of 3 point questions is 42-x

    2x + 3(42-x) = 100

    solve

    (Igot x=26)

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