Question

how should we do this:

Answer 1

Here is ur answer...

no. of students=100
no. of girls=49
no. of boys = 51
_______________________________
no. of girls who came by car = 10
no. of girls who came by bicycle=20
no. of girls who walked =19
_______________________________
no. of boys who came by bicycle=21
no. of boys who walked= 16

_______________________________
the total no. of students who walked =19+16
= 35

Answer 2

We have,

Total students = 100
Girl students = 49
Boy students = 100-49 = 51

Girls came by car = 10
Thus, girl students that came either walking or bicycle = 49-10=39
Boys walked = 16
Thus, boy students that came either car or bicycle = 51-16 = 35

Students came by bicycle = 41
Boy students came by bicycle = 21
Thus, girl students came by bicycle = 41-21 = 20

Thus, boy student came by car = 35-21 = 14
Girl students came by walking = 39-20= 19

Thus, students came by car = boy students + girl students = 14+10= 24

Students came by walking = boy students+ girl students = 16+19 = 35


Thus, 35 of the total students came by walking.