Question

5. In a certain examination, 40% of the students
failed in Mathematics, 30% of the students failed
in English and 10% failed in both. The percentage
of students who passed in both the subjects is:​

Answer 1

Answer:

let it be x

40%+30%+x=100%

70%+x=100%

x= 30%

your answer is 30% passed in all

Answer 2

Answer:

the answer is 30℅

40+30=70℅

100℅-70℅=30℅