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In a certain city only two newspapers A ...

In a certain city only two newspapers A and B are published, it is known that `25%` of the city population reads A and `20%` reads B, while `8%` reads both A and B. It is also known that 30% of those who read A but not B look int advertisements and 40% of those who read B bu not A look into advertisements while 50% of those who read both A and B look into advertisements What is the percentage of the population reads an advertisement? [1984]

A

13.9

B

12.8

C

13

D

13.5

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The correct Answer is:
A
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In a certain city, only two newspapers A and B are published. It is known that 25% of the city population reads A and 20% reads B, while 8% reads A and B. It is also known that 30% of those who rad A but not B, look into advertisements and 40% of those who read B but not A, look into advertisements while 50% of those who read both A and B, look into advertisement. What percent of the population read on advertisement?

There are two newspaper A & B published in a city. If 25% people read A, 20% people read B & 8% both read. Also 30% of these who read A both B look into advertisement 40% of these who read B but not A look into advertisement 50% of these who read both A & B look into advetisement then how many % of people look into advertisement

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In a certain city of 15000 families,3.5% of families who read A but not B look into advertisements,25% of the families who read B but not A look into advertisements and 50% of the families,who read both A and B look into advertisements.It is known that 8000 families read A,4000 read B and 1000 read both A and B.

What is the percentage of persons who read all the three papers?

What is the percentage of persons who read only A but neither B nor C?

In a town three newspapers A, B and C are published . 42% of the people in that town read A, 68% read B, 51% read C, 30% read A and B, 28% read B and C , 36% A and C and 18% do not read any paper . Find the % of population of town that reads all the three.

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