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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.

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1295

1395

1495

1500

answer is C.

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Detailed Solution

3.5% $7000 = 245$

25% of $3000 = 750$

50% of $1000 = 500$

$1495 = 245 + 750 + 500$

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