Question

the ratio of girls and boys in a class is 1:3. Set up an equation between the students of a class abd boys then draw it's graph.also find the number of boys in a class of 40 students

Answer 1

Let the number of girls be x & number of boys be 3x.

x+3x=40
4x=40
x=10



Therefore,number of boys in class : 3x = 3*10=30

Answer 2

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Let the no. of girls be x and boys be 3x.
Therefore,
Equation becomes: x +3x = 40
=> 4x=40
so, x=10.

Since, no. of girls =10
and,
no. of boys= 30.