Get Started
3186

Q: 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?

  • 1
    12
  • 2
    10
  • 3
    8
  • 4
    6
  • Show Answer
  • Workspace

Answer : 3. "8"
Explanation :

Answer: C) 8 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.

Previous Next
Quantitative Aptitude IIT JEE CAT Bank Exams

The Most Comprehensive Exam Preparation Platform

Get the Examsbook Prep App Today