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      Question

      The average marks scored by boys and girls in a class

      are 48 and 32, respectively. The total marks obtained by the entire class is 1680, with 40 students in total. How many boys are there in the class?
      A 15 Correct Answer Incorrect Answer
      B 20 Correct Answer Incorrect Answer
      C 30 Correct Answer Incorrect Answer
      D 25 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Average marks of all the students = 1680/40 = 42 Applying Alligation we get Number of boys in the class = 5/8 ├Ч 40 = 25

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