Question

on a rainy day 30% of a student of a class where absent. if 84 students were present what was the strength of the class

Answer 1

Hey there,

Since 30% were absent so 70% were present.

Let the total number of students be x
then,
70x/100=84
x=840/7
x=120

So the class has a total of 120 students.

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Answer 2

Absent=30%
Present=100-30=70%
Let total strength be x.
70% of x=84
70x/100=84
x=84•100/70
x=120
So,the total strength of the class is 120.
Hope this will help u.