Question

In a class number of girls is X and the number of boys is y. also the number of girls is 15 more than the number of boys write the given data in the form of a linear equation in two variables also represent graphically .find graphically the number of girls if the number of boys is 20.

Answer 1

No. of girls = x
No. of boys = y
Given No. of girls = No. of boys + 15
$\therefore$ $x=y+15\Rightarrow y=x-15$
When y = 20, x = 20 + 15
= 35