Question

In a school of 600 students, 100 come by bus, 80 come walking and remaining are dropped by parents what is percentage of students that do not ride the bus to school. ​

Answer 1

Above question is based on  simple percentage calculation word problem here in this question the data given as

total students=600

by bus=100

by walking=80

remaining  number of students =

by bus students + by walking students

=100+80

=180

now these are the students who use some source to come

for finding the students whose parents dropped at school

$=600 - 180\\=420$

so 420 students are dropped by there parents

$600-100\\=500$

so 500 students dose not use bus for riding

hence percentage  =

$\frac{500}{600} \times 100\\=83.33%$

hence  83.33% students do not ride the bus to school

Answer 2

Given data in question are

In a school total student is $600$.

out of $600$,$100$ comes by bus ,

80 come walking and remaining are drop by parents

Remaining are drop by parents = $600-180$=$420$

We have to find percentage of students that do not ride the bus to school

percentage of students not ride the bus to school=$\frac{Total student - students comes by school}{total student}$$\times 100$

=$\frac{600-100}{600} \times 100$

=$\frac{500}{6}$

=$83.33$ %

Therefore, $83.33$% is the required  percentage of students that do not ride the bus to school.