In an examination 60% of the candidates passed in Mathematics, 70% in Statistics and 10% failed in both
the subjects. If 300 candidates passed in both the subjects, the total number of candidates who appeared
for the exam is ___________.
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don't know sorry bro please fllow
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No of candidates failed in Maths = ( 100 - 60=40%)
No of candidates failed in Stats = (100- 70= 30%)
No of candidates failed in both = 10%
No of candidates failed in any subject would be
= 40 + 30 - 10 = 60 %
So candidates passed in both = (100 - 60 = 40%]
so 40% of candidates = 300 ( given )
Total students = 300 * 100 / 40 = 750
Total candidates appeared for exam = 750
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