Question

In an examination,90% of the students passed.If 12 students failed, find the total number of students​

Answer 1

Answer:

Let the total no. of student be x

Therefore, total percentage of students be 100%

therefore, percentage of students failed = ( 100-90 )%

= 10%

According to the question

10%of x = 12

=> 10/100×x = 12

=> 10x = 12×100

=> x = 1200/10

=> x = 120

ans) Total no. of student is 120

Answer 2

Answer:  Total Number of students is 120

Step-by-step explanation:   Let the total no. of student be x

Therefore, let the total percentage of students be 100%

percentage of students failed = ( 100-90 )%  = 10%

= 10%of x = 12

=> 10/100×x = 12

=> 10x = 12×100

=> x = 1200/10

= x = 120

Therefore  no. of students are  120