What is the speed of the boat in still water? I.             It takes 2 hours to cover the distance between A and B downstream.  II.          It takes 4 hours to cover the distance between A and B upstream.

A.I alone sufficient while II alone not sufficient to answer

B.II alone sufficient while I alone not sufficient to answer

C.Either I or II alone sufficient to answer

D.Both I and II are not sufficient to answer

E.Both I and II are necessary to answer

Show Answer

Answer=Option D

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