data sufficiency - what is gangas age i ganga vishnu and khusi are all of the same age ii total age of vishnu khusi and amsa is 32 and amsa is as old as vishnu and khusi together - skillgun

Please read the below given text for solving the question Each question given below has a problem and two statements numbered I and II giving certain information. You have to decide if the information given in the statements is sufficient for answering the problem. Indicate your answer as (a) if the data in the statement I alone is sufficient to answer the question; (b) if the data in the statement II alone is sufficient to answer the question; (c) if the data either in I or II alone are sufficient to answer to question; (d) if the data even in both the statements together are not sufficient to answer the question; (e) if the data in both the statement together are needed.

As given in statements I and II, we have G = V= K, V+K+A=32 and A=V+K.
Putting V+K=A in second, we get 2A=32 or A=16.
Thus V+K=16 and V=K. So, V=K=8.
Thus R = 8.
Hence both statements are needed.