In an interview in a town, it was seen that 550 people like to visit the zoo, and 450 people like to visit the beach, and 300 people like to visit both the zoo and the beach. Find the total number of people interviewed.

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CSIR CERI JSA Official Paper-I (Held On: 2022)
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  1. 700
  2. 725
  3. 750
  4. 600

Answer (Detailed Solution Below)

Option 1 : 700
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Detailed Solution

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Given:

People who like to visit the zoo = 550

People who like to visit the beach = 450

People who like to visit both the zoo and the beach = 300

Concept Used:

Total number of people interviewed = People who like to visit the zoo + People who like to visit the beach - People who like to visit both the zoo and the beach

Calculation:

Total number of people interviewed = 550 + 450 - 300

⇒ Total number of people interviewed = 700

The total number of people interviewed is 700.

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