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?
Answer & explanation
Correct answer: option 3
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, $y=10−x$
|
x |
0 |
1 |
2 |
3 |
4 |
5 |
7 |
|
y |
10 |
9 |
8 |
7 |
6 |
5 |
3 |
From (2), $x−y=−y$
so $y=x+y$
|
x |
0 |
1 |
2 |
3 |
4 |
|
y |
4 |
5 |
6 |
7 |
8 |
hence , the correct option is 3.
