The current ages of Sudhir and Ashish are in the ratio 5 ∶ 7. Twelve years ago, the ratio of their ages was 1 ∶ 2. What will be the age of Sudhir after five years from now? 

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SSC CGL 2023 Tier-I Official Paper (Held On: 14 Jul 2023 Shift 3)
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  1. 20 years
  2. 25 years
  3. 33 years
  4. 28 years  

Answer (Detailed Solution Below)

Option 2 : 25 years
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Detailed Solution

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Given: 

12 years ago, Sudhir and Ashish = 1 : 2

Current age of Sudhir and Ashish = 5: 7

Concept used:

We will be using the concept of ratio.

Calculation:

Let the ages of Sudhir and Ashish 12 years ago = 1x and 2x respectively,

According to the question,

(1x + 12) / (2x + 12) = 5/7

⇒ 7x + 84 = 10x + 60

⇒ 3x = 24

⇒ x = 8

∴ Present age of Sudhir  = 8 + 12 = 20 year

The age of Sudhir after five years from now = 20 + 5 = 25

The age of Sudhir after five years from now is 25 years.

Shortcut Trick

We will first equate the age gap,since it remains constant.

F3 SSC Savita 09-10-23 D7

The age of Sudhir after five years from now = 20 + 5 = 25

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