9. In a city 42% of people read newspaper A,51% read paper B,68% read paper C , 30% read A and B,28% read B and C , 36% read A and C , 8% do not read any of the three.Find the percentage of people who read all the three newspapers.
Answers
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25 % read all the three newspapers.
Step-by-step explanation:
people read newspaper A = 42 %
people read newspaper B = 51 %
people read newspaper C = 68 %
people read newspaper A∩B = 30 %
people read newspaper B∩C= 28 %
people read newspaper A∩C = 36 %
people read all the three newspapers. A∩B∩C = ?
people read none = 8%
Total = 100 %
Total = A + B + C - A∩B - B∩C - A∩C + A∩B∩C + None
=> 100 = 42 + 51 + 68 - 30 - 28 - 36 + A∩B∩C + 8
=> A∩B∩C = 25
25 % read all the three newspapers.
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