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A certain city of 15000 families, 3.5% of families who read A but not B look into advertisement, 25% of the families who read B but not A look into advertising 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.1000 read both A and B. Choose the correct answer The number of families who look into advertisements (1) 1295 (2) 1395 (3) 1495 (4) 1500

A certain city of 15000 families, 3.5% of families who read A but not B look into advertisement, 25% of the families who read B but not A look into advertising 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.1000 read both A and B.
Choose the correct answer
The number of families who look into advertisements
(1) 1295
(2) 1395
(3) 1495
(4) 1500

Grade:12th pass

2 Answers

Pawan Prajapati
askIITians Faculty 60787 Points
2 years ago
Our expert is working on this Class IX Maths answer. We will update the answer very soon.
Harsh Vipul Shah
26 Points
one year ago
In the city, 8000 families read A, 4000read B & 1000 read both A and B.
 
   ∴ |A| = 7000 |B| = 3000 |A∩B| = 1000
 
    3.5% of families who read A = = 245
 
    25% of the families who read B = = 750
 
    50% of the families read both A and B = = 500
 
∴ number of families who look into advertisements
 
   i.e. |C| = 245 + 750 + 500
 
     |C| = 1495

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