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?

• Let,Jennifer Had corrected x No. of questions
  Then, No. of her incorrect questions =20-x
  Now the equation is : 10x-5(20-x)=125
  Solving, we get x=15
  Thus, She had wrongs answers for 5 questions
• 11 years agoHelpfull: Yes(19) No(2)
• out of total 20 questions 15 are correct and 5 are incorrect
  15*10-5*5=125
  10- if correct
  5-if incorrect
  so 5 wrong answers she have.
• 11 years agoHelpfull: Yes(7) No(0)
• 15 right
  5 wrong
• 11 years agoHelpfull: Yes(4) No(1)
• Total questions =20
  points for correct answer =10
  points for wrong answer =5
  score gained=125
  total score if all answers correct=200
  i.e 200-125=75
  no of wrong answers = 75/5=15
  so she had answered 15 questions wrongly..
• 11 years agoHelpfull: Yes(2) No(12)