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      Question

      A student scored 72 marks out of 90 in Mathematics and

      64 marks out of 80 in Science. What is his overall percentage?
      A 65 Correct Answer Incorrect Answer
      B 45 Correct Answer Incorrect Answer
      C 80 Correct Answer Incorrect Answer
      D 75 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Total marks obtained = 72 + 64 = 136 Total maximum marks = 90 + 80 = 170 Percentage = (136 ÷ 170) × 100 = (136 × 100) ÷ 170 = (136 × 10) ÷ 17 = 1360 ÷ 17 = 80

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