If 79% of a number is added to 399, then the result is the number itself. Find the number.

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OSSC CGL 2022 Official Paper (Held on: 14th Oct Shift 1)
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  1. 2000
  2. 1800
  3. 1700
  4. 1900

Answer (Detailed Solution Below)

Option 4 : 1900
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Calculation:-

Let the number be x

According to the question

79/100 × x + 399 = x

⇒ 79x / 100 + 399 = x

⇒ x - 79x /100 = 399

⇒ 21x /100 = 399

⇒ 21x = 39900

⇒ x = 39900/21

⇒ x = 1900

∴ The Number is 1900.

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