Question (9/42)
Sam takes twice as long to row a distance against the stream as to row the same distance along the stream. What is ratio of speed of the boat in still water and the stream ?(A) 2 : 1
(B) 3 : 1
(C) 3 : 2
(D) 4 : 3
Question (10/42)
A man can row three-quarters of a kilometre against the stream in `11 1/4` minutes while it takes him `7 1/2` minutes to cover same distance along the stream. What is speed in km/hr of the man in still water ?(A) 2 km/hr
(B) 3 km/hr
(C) 4 km/hr
(D) 5 km/hr