What is the age (in years) of Raghu?
Using the information, we can fix the parameters of our table: Let us fix the direct information provided to us in the (I), (II), (III) & (IV) from statement (V).
It is given that Anand's age is the average of ages of Sushil and Raghu.
And from statement (VIII) and (III) we can conclude that Raghu's age is 14 and Sushil's age is 12. Hence, Anand's age will be 13.
Hence, by combining all the data we will get the following table: