Question

In the year 2013, there were 1200 students studying in a school and of them, 400 were girls. 50 girls
were not residing in hostel. In all 600 boys were residing in hostel. In the year 2014 their is an
increase of 20% in the number of boys and the number of girls increased by 30%. During this year,
260 boys and 100 girls were not residing in hostel. In the year 2015, 140 boys and 100 girls were
newly admitted in the school and all of them resided with the hostel students. Present above data in
a tabular form.

Answer 1

Answer:

It is given that; there are 1200 students in a school out of which 45%

of students are girls.

∴ Number of girl students = 45%

of 1200

=45100×1200

=45×12

= 540

Thus, the number of girl students is 540.

So, the number of boy students is the difference of the total number of students and number of girl students.

∴ Number of boy students = 1200 – 540

= 660

Now, it is given that 30%

of girl students use the school bus to travel to the school.

So, 30%

of 540 =30100×540

= 3×54

= 162

So, 162 girl students out of 540, use the school bus to travel to the school.

Also, 25%

of boy students use school buses to travel to school.

So, 25%

of 660 =25100×660

=6604

= 165

So, 165 boy students out of 660, use school buses to travel to the school.

Thus, 165 + 162 = 327 students out of 1200 students use the school bus to travel to school.

Now, we have to find %

of students who travel by school bus.

∴ % of students =3271200×100%

=32712%

=27.25%

Thus, 27.25%

of students use school buses to travel to school.