📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      The marks scored by a boy in three subjects are in the

      ratio 2 : 3 : 4. Boy scored an overall aggregate of 75% in the exam. If the maximum marks in each subject are the same, in how many subjects did boy score more than 70% marks?
      A One Correct Answer Incorrect Answer
      B Three Correct Answer Incorrect Answer
      C none Correct Answer Incorrect Answer
      D Two Correct Answer Incorrect Answer

      Solution

      Let the maximum marks in each subject be 100.
      ∴ Total score = 75% of (100 + 100 + 100) = 75% of (300) = 225
      Also, 75% marks in a subject correspond to 75% of (100) = 75
      Let a boy have scored 2x, 3x and 4x in the three subjects.
      ∴ 2x + 3x + 4x = 225
      ∴ 9x = 225 i.e. x = 25
      Hence, his marks in the three subjects are 50, 75 and 100.
      Hence, he has scored more than 70 in exactly two subject.

      Practice Next
      More Percentage Questions

      Relevant for Exams:

      ask-question