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March 30, 2017

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In a math contest each team is asked 50 questions. The team earns 15 points for each correct answer and loses 8 for each incorrect answer. One team finished with 566 points. How many questions id the team answer correctly?

  • ALGEBRA - ,

    correct answers --- x
    wrong answers ---- 50-x

    15x - 8(50-x) = 566

    solve for x

    (I got x = 42)

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