20 years ago my age was 1/3rd of my present age. What is my present age now?
- 66 years
- 36 years
- 33 years
- 30 years
- None of these
The Usual Method
Let the present age be ‘x’ years.
Hence, 20 years ago the age was (x – 20) years. Also this age is 1/3rd of the present age.
Estimated Time to arrive at the answer = 30 seconds.
Note that if, the age 20 years ago was 1/3rd of the present age, than 20 years represents 2/3rd of the present age. Hence, present age = 30 years.
Estimated Time to arrive at the answer = 5 seconds.