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  • Question
  • The average age of a class is 19 years. While the average age of girls is 18 and that of boys is 21. If the number of girls in the class is 16, Find the number of Boys in the class?


  • Options
  • A. 12
  • B. 10
  • C. 8
  • D. 6

  • Correct Answer


  • Explanation

    Let the number of boys = x

    From the given data,

    => [21x + 16(18)]/(x+16) = 19

    => 21x - 19x = 19(16) - 16(18)

    => 2x = 16

    => x = 8

    Therefore, the number of boys in the class = 8.

  • Tags: AIEEE, Bank Exams, CAT, Bank Clerk, Bank PO

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    • 2. 
      The value of 47 / 10000 is?

    • Options
    • A. .0047
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    • Options
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