Question

20 percent of the students in a school were absent of 180 students were absent,find the number of students in the school​

Answer 1

As per the data given in the question,

We have to determine the total number of students.

As per question,

It is given that,

20% of the students were absent.

Total number of absent students = 180.

So, for finding the total number of students we will assume that there are total of "x" students in the class.

So, mathematically we can say that,

$20\%\:of\:x = 180\\=>\frac{20}{100}\times x = 180\\=>x =\frac{180 \times 100}{20}\\=>x = 900$

Hence, total number of student in the school was 900.

Answer 2

Answer:

Number of students in a class is 900 .

Step-by-step explanation:

Given -

20 % students absent of total students is 180.

To find -

The number of students in the school.

Solution -

​Let, total number of students is $x$

20 % students absent of total students is 180

We can write given information as,

$\frac{20}{100} \times x= 180$

We have to find the value of x so shift left value to right except x

$x= 180 \times \frac{100}{20}$

$x = 18 \times \frac{100}{2}$

Divide 18 by 2 we get

$x = 9 \times 100$

$x=900$

∴ Number of students in a class is 900 .