Question:
Two newspapers A and B are published in a city. It is known that 25% of the city populations reads A and 20% reads B while 8% reads both A and B. Further, 30% of those who read A but not B look into advertisements and 40% of those who read B but not A also look into advertisements, while 50% of those who read both A and B look into advertisements. Then the percentage of the population who look into advertisement is :-
Two newspapers A and B are published in a city. It is known that 25% of the city populations reads A and 20% reads B while 8% reads both A and B. Further, 30% of those who read A but not B look into advertisements and 40% of those who read B but not A also look into advertisements, while 50% of those who read both A and B look into advertisements. Then the percentage of the population who look into advertisement is :-
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Find the percentage reading A only, B only and both, then take the given fractions of each.
Updated On: Nov 5, 2026
- 13.5
- 13
- 12.8
- 13.9
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The Correct Option is D
Solution and Explanation
Take the population as 100.
Only A: \(25 - 8 = 17\); only B: \(20 - 8 = 12\); both: \(8\).
Advertisement readers: \(0.30\times17 + 0.40\times12 + 0.50\times8 = 5.1 + 4.8 + 4.0 = 13.9\).
So 13.9% of the population look into advertisements.
Answer: (4) 13.9
Only A: \(25 - 8 = 17\); only B: \(20 - 8 = 12\); both: \(8\).
Advertisement readers: \(0.30\times17 + 0.40\times12 + 0.50\times8 = 5.1 + 4.8 + 4.0 = 13.9\).
So 13.9% of the population look into advertisements.
Answer: (4) 13.9
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