In a class90% of the students were present on a certain day. if there were only 36 students present on that day. how many students were absent?

.9 x = 36

x = 36/.9 = 40

let d number of students b represented by x

their total percentage is 100%
if so
96%=36students
100%=x
96x=36×100
96x=3600
x= 3600÷96
x=37.5

Josephine -- what is a half a student?

To find the number of students absent, we first need to determine the total number of students in the class.

Let's assume the total number of students in the class is "x".

We are given that 90% of the students were present, which means 10% were absent.

To express 10% as a decimal, we divide it by 100: 10% / 100 = 0.1.

Therefore, 10% of the students who were absent can be represented as 0.1x.

We know that 90% of the students were present, which equals 36 students.

So, we can set up the following equation:

0.9x = 36

To solve for x, we divide both sides of the equation by 0.9:

x = 36 / 0.9

x ≈ 40

So, there are approximately 40 students in the class.

Now, to find the number of students who were absent, we can subtract the number of students present on the certain day from the total number of students:

Number of students absent = Total number of students - Number of students present
= 40 - 36
= 4

Therefore, there were 4 students absent on that day.