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Today is Alka's birthday. 3 years from today she will be twice as old as she was 12 years ago. How old is Alka today ?1. 23 years2. 24 years3. 26 years4. 27 years

Answer» Correct Answer - Option 4 : 27 years

Given:

3 years from Alka's birthday, she will be twice as old as she was 12 years ago

Calculation:

Let Alka’s age today be x years. 

Then, Alka’ age after 3 year = (x + 3) years.

12 years ago, Alka's age = (x - 12) years

According to question:

⇒ x + 3 = 2 × (x - 12) 

⇒ x + 3 = 2x – 24

⇒ x = 27



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