A test has twenty questions worth 100 points total. the test consists of true/false questions worth

Discussion in 'Calculator Requests' started by math_celebrity, Apr 6, 2019.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    A test has twenty questions worth 100 points total. the test consists of true/false questions worth 3 points each and multiple choice questions worth 11 points each. How many true/false questions are on the test?

    Let m be the number of multiple choice questions and t be the number of true/false questions. We're given:
    1. m + t = 20
    2. 11m + 3t = 100
    We can solve this system of equations 3 ways below:
    No matter which method we choose, we get the following answers:
    • m = 5
    • t = 15
    Check our work in equation 1:
    5 + 15 ? 20
    20 = 20

    Check our work in equation 2:
    11(5) + 3(15) ? 100
    55 + 45 ? 100
    100 = 100
     

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