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Friday Riddle

nudgie's picture
nudgie
Posts: 1482
Joined: Sep 2006

REMEMBER NO GOOGLING OR SEARCHING THE INTERNET ALLOWED AND GOOD LUCK !!!!!!!!!

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?

abrub's picture
abrub
Posts: 2178
Joined: Mar 2010

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

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