Boats and Streams

What is the speed of the boat in still water? I.             The boat covers a distance of 48 kms in 6 hours while running upstream.  II.          The boat covers the same distance in 4 hours while running downstream.

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 E

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

A boat takes a total time of three hours to travel downstream from P and Q and upstream back from Q to P. What is the speed of the boat in still water? I.             The speed of the river current is 1 km per hour.  II.          The distance between P and Q is 4 km.

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 E