Question

Say true or false:

$10$ students of Class $X$ took part in a Mathematics quiz. If the number of girls is $4$ more than the number of boys, then the number of boys and girls who took part in the quiz are $3$ and $7$, respectively.

• A. True
• B. False

Answer 1

The correct option is A True

Let $x$ represent the number of girls and $y$ represent the number of boys.
and let $x=y+4$
$\therefore x+y=10$ ......(1)
$\Rightarrow y+4+y=10$
$\Rightarrow 2y=6$
$\Rightarrow y=3$
Substituting the value of $y$ in (1) gives $x=7$
Therefore, the number of boys and girls who took part in the quiz are $3$ and $7$.
The correct answer is $A$.