In an examination 70% of the candidates passed in English

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In an examination, 70% of the candidates passed in English, 80% passed in Mathematics and 10% failed in both the subjects. If 84 candidates passed in both, the total number of candidates was
(a) 125 (b) 200 (c) 140 (d) 375

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Sir in question it is given that the 10% students failed in both .. so with the help of this we do find total failed students..=. 40%


But in question it is given that the
84 students passed in both...

So we take take total students =60%

why don't we take students passed in both subjects= 90%.

shubamrajput
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You nailed it bro
.
Love and respect from Chennai

Jayakumarvlogs-fire
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Some students (only boys and girls) from different schools appeared for an Olympiad exam. 20% of the boys and 15% of the girls failed the exam. The number of boys who passed the exam was 70 more than that of the girls who passed the exam. A total of 90 students failed. Find the number of students that appeared for the exam.

Jayakumarvlogs-fire
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Thank you very much sir... Both method shikhane ke liye sir

keshavsingh
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Sir it was good but I needed the solution of another question-
out of hundred students 50 failed in English and 30 in mathematics if 12 students fail in both English and mathematics and number of students who passed in both the subject please answer this question

kinnipriyanka
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in an examination 30% of the student has fail in mathematics, 20% of the student fail in statistics and 10%have failed have both mathematics and statistics a student selected at random what is probability that the student has failed in mathematics if it is known that he has failed in statistics?

mrindianvlogs
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Sir pass vale venn diagram ka samjh nhi aya.

rahulgulati