Question

In a class test 90 % of the students passed while the rest failed. If the number of failed students was 3, how many students were there in class?​

Answer 1

HERE IS YOUR ANSWER

Let the total no. of students be x

Students failed = 90% of x

=9/10x

According to the question

x-9x/10=3

(10x-9x)/10=3

x/10=3

x=10*3

x=30

Therefore, no. of students in the class is 30