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Two newspapers A and B are published in a city. It is knows that 25% of the city population 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 advertisements is

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12.8

13.9

13.5

answer is B.

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Detailed Solution

News papers read population person’s is
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Advertisements read population is

$\Rightarrow 5.1 + 4 + 4.8 = 13.9$

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