The
square of the difference between the age of my eldest brother Niranjan
and of my sister Sunita (who is only 5 year old) is equal to the square
of the number obtained by subtracting 8 from my present age. The
difference between Nirangan’s age and mine equals the difference between
the square of the sum of our (Niranjan’s and mine) age and 160. How old
am I?1. 12 years2. 10 years3. 2 years4. 16 years5. 4 years

1) 1
2) 2
3) 3
4) 4
5) 5