Question

$10$ students of class $X$ took part in a Mathematics quiz. If the number of girls is $4$ more than the number of boys, Find the number of boys and girls who took part in the quiz.

Answer 1

No of girls =$x$

No of boys =$y$

$x+y=10-----\left(1\right)$

$x=y+4------\left(2\right)$

put in $\left(1\right)$

$2y+4=10$

$y=3$

$x=7$

$3$ boys and $7$ girls took part in the quiz