Asked by Rubi
There were 120 multiple choice questions.a candidate was given 1mark for each correct answercand penalised ¼ mark for every wrong answer.the candidate answered all the questions and scored 80marks.find the number of correct answers given by the candidate.
Answers
Answered by
Steve
If there were x correct answers, then there were (120-x) incorrect answers. So,
x - (120-x)/4 = 80
x - (120-x)/4 = 80
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