Question

eIn 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 the class ?​

Answer 1

Answer:

The number of students present in class was 30.

Step-by-step explanation:

Let x be the total number of students.

No. of students failed = 3

x-(x×90/100)=3

➡️x-9/10x=3

➡️10x-9x/10=3

➡️x/10=3

➡️x=10×3

➡️x=30

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