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Friday Riddle

nudgie
nudgie Member Posts: 1,478
edited March 2014 in Colorectal Cancer #1
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RIDDLE: Jennifer took a test that had 20 questions. The total grade was computed by awarding 10 points for each correct answer and deducting 5 points for each incorrect answer. Jennifer answered all 20 questions and received a score of 125. How many wrong answers did she have?

Comments

  • abrub
    abrub Member Posts: 2,171
    According to my algebra...

    15 right (x) and 5 wrong (y)

    x + y = 20

    10x - 5y = 125

    Solve the equations!

    I haven't done algebra in years - who says it isn't a life skill!

    Alice