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March 25, 2017

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how to i solve this problem asked previously unsatisfied with ans. Jack and Jill copared results on math test. Jack had 40 correct ans & Jill had 50 correct ans. There were 32 questions they both had correct and 6 they both had wrong. How do I determine how many questions were on the test?

  • math olympiad - ,

    total number of questions
    = 40+50-32+6
    = 64

  • math olympiad - ,

    Work (correct or not) Courtesy of Dorian W

    Consider this argument:

    (40-32) + (50-32) + 6 + 32 = y (y being the number of questions) (their results must minus the 32 first in order to get the number of questions they got correct, but not together)
    8 + 18 + 6 + 32 = y
    y = 64 questions

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