Subject
Quantitative Aptitude
Topic
Percentage
In an examination, 34% of the students failed in Mathematics and 42% faiied in English. If 20% of the students failed in both the subjects, then the percentage of students who passed in both the subjects was :
In an examination, 34% of the students failed in Mathematics and 42% faiied in English. If 20% of the students failed in both the subjects, then the percentage of students who passed in both the subjects was :
ক)
34 %খ)
44 %গ)
54 %ঘ)
64 %Explanation
n (A) = 34, n (B) = 42, n (A ∩ B) = 20. So, n (A U B) = n (A) + n(B) - n(A ∩B) = 34 + 42 - 20 = 56. Percentage failed in either or both the subjects = 56. Hence, percentage passed = (100 - 66)% = 44%.Related questions
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