Ques. In an examination, 70% of students passed in physics, 65% in chemistry, 27% failed in both subjects. The percentage of students who passed is:
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Answer:
62%
Step-by-step explanation:
70% students passed in physics
=> 30% failed in physics
Since 27% failed in both subjects, those who failed only in physics
= 30 - 27
= 3%...........(i)
65% students passed in chemistry
=> 35% students failed in chemistry
Since 27% failed in both subjects, those who failed only in chemistry
= 35 - 27
= 8%.................(ii)
=> Percentage of all students who failed = 3% + 8% + 27%
= 38%
=> Percentage of students who passed = 100% - 38%
= 62%
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