Q.51 A man can row ¾th of a km against the stream in 11 ½ min. and return in 7 ½ min. Find his speed in still water.
(A) 1 km/ph
(B) 2 km/ph
(C) 5 km/ph
(D) none of these
Q.52 A person can row 7 ½ km in still water. It takes him twice as long as to row up a distance as to row down the same distance. Find the speed of the stream.
(A) 1.5 km/ph
(B) 2.5 km/ph
(C) 5.5 km/ph
(D) 3.5 km/ph
Q.53 A boat travels 10 km in 1 hr. downstream and 14 km in 2 hrs. upstream. Find how much time this boat will take to travel 17 km in still water.
(A) 1 hrs.
(B) 1 ½ hrs.
(C) 2 hrs.
(D) 2 ½ hrs.
Q.54 A man can row with the stream 10 km per hour and against the stream at 5 km per hour. Man’s rate in still water is……
(A) 6 km/ph
(B) 2.5 km/ph
(C) 7.5 km/ph
(D) 15 km/ph
Q.55 A man rows up the stream 11 km and down the stream 26 km taking 5 hrs. each time. The velocity of the current is….
(A) 3 km
(B) 2.5 km
(C) 5 km
(D) none of these
For more practice-related average questions, you can visit on the next page.
Get the Examsbook Prep App Today