Nitesh and Seema are having two children, a son Abhi and a daughter Manvi. 8 years ago Seema’s age was equal to sum of present ages of Abhi and Manvi. 6 years hence, the ratio of ages of Abhi and Manvi at that time will be 5 ∶ 4. Seema is 4 years younger than Nitesh. Seema’s present age is 2.5 times the present age of Manvi. Find the age of Nitesh.