Question

in a class of 30 students 80% students failed in examination how many students passed in the examination.​

Answer 1

Given,

In a class of $30$ students $80$% students failed in examination.

So, we can find the failed students first

Failed students $= 30\times\frac{80}{100}$

Failed students $= 24$

Since $24$ students failed in a class out of $30$ students

We want to find the students passes in examination,

Passed students $=$ Total students in class$-$Failed students in class

Passed students $=30-24$

Passed students $=6$

Therefore, the passed students in examination is $6$.

Answer 2

Answer:

$6$

Step-by-step explanation:

Given data,

• Number of students in a class $=30$

• Percentage of students who failed in the examination $=80$%

• Then, percentage of students who passed in the examination

$=100-80=20$%

• Number of students who passed in the examination

$=30\times\frac{20}{100}$

$=6$

Hence, number of students who passed n the examination is $6$.