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      Question

       In an examination of Hindi, English and Mathematics

      subjects, the total marks are 120, 140 and 100 respectively. A student gets 40%, 55% and 45% marks in these subjects respectively. How many marks should he get in Science subject out of the total 180 marks in it so that his combined percentage of marks obtained in all the four subjects becomes 60% ?
      A 156 Correct Answer Incorrect Answer
      B 160 Correct Answer Incorrect Answer
      C 154 Correct Answer Incorrect Answer
      D More than one of the above Correct Answer Incorrect Answer
      E None of the above Correct Answer Incorrect Answer

      Solution

      ATQ, Given Data: Hindi: 40% of 120 → 48 marks English: 55% of 140 → 77 marks Maths: 45% of 100 → 45 marks Science: Total marks 180, let marks obtained be x Total marks of all subjects = 120 + 140 + 100 + 180 = 540 Required overall percentage = 60%  Required total marks = 60% of 540 = 324 To find Required Marks in Science Marks already obtained in Hindi, English, and Maths: 48+77+45=170 Marks needed in Science: x=324−170=154 Hence, the student should get 154 marks in Science. 

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