What will be His Percentage of Marks in the Third Subject? If

In an Examination there are three subject of 100 marks each. A student scores 60% in the 1st subject and 80% in the second subject. He scored 70% in aggregate. His percentage of marks in the third subject is:

  1. 70
  2. 80
  3. 60
  4. 65
Monis Rasool Professor Asked on 28th June 2015 in Maths.
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  • 1 Answer(s)

    Answer: (1) 70%
    Explanation:-
    Let be the score of third subject = X
    A student of score in first subject = 60% = 60 x 100/100 = 60
    A student of score in second subject = 80% = 80 x 100/100 = 80
    70% of 300 = 300 x 70/100 = 210
    score of third subject = 210 – ( 60 + 80)
    = 210 – 140 = 70
    Percentage of score in third subject = 70 x 100/100 = 70%
    Hence, the answer is (1) 70%

    Anurag Mishra Professor Answered on 28th June 2015.
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