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Question 140
In the given figure 10% are students and parents, and the 10% are students, teachers and parents, 15% are teachers and parents. 35% are students and teachers. How many percentage are only teachers, parents and students.
Solution
Every subset is taken as 100% when it is to be taken as a whole
Then Percentage of only teachers = 100% - (35% + 10% + 15%) = 40%
Similarly,
Percentage of only parents = 100% - (10% + 10% + 15%) = 65%
Percentage of only students = 100% - (35% + 10% + 10%) = 45%.
Hence, the option B is correct.
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