When Jatin was 9 year old, Aanya was times younger than him. Now Jatin is 30 years old, how old is Aanya?

Question

Ramesh says to his son Girish, "My age was two years more than 7 times of your's age before 30 and 1/2 a year and after 2 and 1/2 a year, my age will be twice of yours age of 1/2 a year before". What will be the age of Girish after 12 and 1/2 a year.