2016 SSC CGL 06 Sep Morning Shift Question 4

Question 4

Numbers of boys and girls are 'x' and 'y' respectively ; average ages of a girl and a boy are 'a' years and 'b' years respectively. The average age (in years) of all boys and girls.


Number of boys = $$x$$

Average age of boys = $$b$$

=> Total age of boys = $$bx$$

Similarly, total age of girls = $$ay$$

$$\therefore$$ Average age of all boys and girls = Total age of boys and girls / Number of boys and girls

= $$\frac{bx+ay}{x+y}$$

=> Ans - (B)

Create a FREE account and get:

  • Free SSC Study Material - 18000 Questions
  • 230+ SSC previous papers with solutions PDF
  • 100+ SSC Online Tests for Free


Register with


Boost your Prep!

Download App