Question

out of class of 45 students , five were absent , 30% of the remaining had failed to do homework . Find the number of students who did the homework .

Answer 1

Total no. of students-45
no. of students absent-5
no. of students present-40
no. of students who failed to do the homework-30℅of 40=30/100×40=12
no. of students who did the homework-40-12=28
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Answer 2

I think 28 students had done their homework
Total students=45
Absent students=5
Remaining students=40
If 40 students= 100℅
then ? =30℅
that is 12 students
Now total students-12 students
The answer is 28 students