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 Which graph represents the solution of the problem?

let no.of  boys = x

no of girls = y

Total number of students took part in quiz -x+y−io

$2+y=10$  −−−−−(1)                

if no. of girls is y more than no . of → $=x+y$

$x−y=−y$   −−−−−(2)

From (1), $x+y=10$

so, $y=10−x$

From (2), $x−y=−y$

so $y=x+y$

hence , the correct option is 3.