What is the marks in Science ?

A   got  twice  as  many  marks  in English  as in  Science.  His  total marks   in English, Science and Mathematics is 180. If the ratio of his marks in English and Mathematics is 2:3, what are his marks in Science?

  1. 20
  2.  60
  3.  30
  4.  40
Anurag Mishra Professor Asked on 19th July 2015 in Maths.
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  • 1 Answer(s)

    Answer: (3) 30
    Explanation:-
    According to the question,
    Marks in science = 2 x marks in English               . ……………… (1)
    The ratio of his marks in English and mathematics = 2 : 3
    Let be the marks in English = 2X  & Marks in mathematics = 3X
    Therefore, marks in science = X      (From equation (1) )
    The total marks in English, Science  & Mathematics = 2X + X + 3X = 180
    6X =  180
    X = 180/6
    X = 30
    Hence, the answer is (3) 30.

    Anurag Mishra Professor Answered on 19th July 2015.
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