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      Question

      A candidate just passed by getting 150 answers correct

      by attempting 225 of the total questions. Find the total number of questions in the examination if a candidate needs 60% marks. (All questions carry equal marks)
      A 150 Correct Answer Incorrect Answer
      B 125 Correct Answer Incorrect Answer
      C 200 Correct Answer Incorrect Answer
      D 250 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the total number of questions be x. then, Percentage need in exam = 60% Correct answer = 150 percentage = (correct answer)/(total questions) 100 60 = (150/x) × 100 x = 250 Alternate method Given that 150 ≡ 60% 1 ≡ 10/25 % 250 ≡ 100% Total number of questions = 250

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