In an examination, 80% of students passed in English, 70% of students passed in Hindi and 15% failed in both…
In an examination, 80% of students passed in English, 70% of students passed in Hindi and 15% failed in both the subjects. What is the percentage of students who failed in only one subject?
15%
20%
25%
35%
Solution
Failed in English = 20%, failed in Hindi = 30%, failed in both = 15%. Failed in only English = $20 - 15 = 5\%$. Failed in only Hindi = $30 - 15 = 15\%$. Failed in only one subject = $5 + 15 = 20\%$.