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Q.

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.

The number of families who look into advertisements.

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a

1395

b

1295

c

1495

d

1500

answer is C.

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Detailed Solution

Question Image

3.5%7000=245

25% of 3000=750

50% of 1000=500

1495=245+750+500

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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.The number of families who look into advertisements.