The section of boat and stream is an important topic of mathematics subject from competitive examinations like SSC, UPSC, Railways, Banking, which we can understand by the adaptive and counter current of the stream. Relative to the flow of the current, if a boat or man moves along with the stream ie in the direction of the stream, then its speed is said to be in the flow of the stream. On the other hand, if a boat or man moves in the opposite direction of the current, then its speed is said to be counterclockwise.
Questions related to boat and stream can be solved only by understanding the formulas, like speed of boat = (speed in the direction of the stream + speed in the direction of the flow) / 2 or speed of the stream = (speed in the direction of the stream - of the stream Opposite move) / 2.
Here in this article today, I have provided questions based on boat and stream, which can improve your performance level. If you are also preparing for any competitive exam, then the important questions given here will help you a lot in your exam preparation.
Q : A man rows to a place 35 km in distance and back in 10 hours 30 minutes. He found that he can row 5 km with the stream in the same time as he can row 4 km against the stream. Find the rate of flow of the stream?
(A) 1.33 km/hr
(B) 1.5 km/hr
(C) 1 km/hr
(D) 0.75 km/hr
A boat moves downstream at the rate of 1 km in
(A) 4 km/hour
(B) 3 km/hour
(C) 8 km/hour
(D)
A motorboat, whose speed is 45 km./hr. in still water goes 180 km. downstream and comes back in a total of 9 hours. The speed of the stream (in km/hr.) is-
(A) 12
(B) 21
(C) 18
(D) 10
(E) 15
If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is :
(A) 4 hr
(B) 7 hr
(C) 2 hr
(D) 3 hr
A man rows 12 km in 5 hours against the stream and the speed of current being 4 kmph, What time will be taken by him to row 15 km with the stream?
(A) 1 hour
(B) 1 hour
(C) 1 hour
(D) 1 hour
Ratio of time taken by a sailor to cover some distance upstream and downstream is 4 : 1. If speed of stream is 4.5 km/hr. Then find out speed of boat?
(A) 8.5 km / hr
(B) 9.5 km / hr
(C) 7.5 km / hr
(D) 8 km / hr
A man can row at a speed of
(A) 2
(B) 2.5
(C) 1
(D) 1.5
The speed of a boat downstream is 15 km/hr. and the speed of current is 3 km/hr. Find the total time taken by the boat to cover 15 km upstream and 15 km downstream.
(A) 3 hours 10 minutes
(B) 2 hours 30 minutes
(C) 2 hours 40 minutes
(D) 2 hours 42 minutes
If a sailer sails 12 km distance within 5 hours against the flow of a river. If he sails 22 km distance in same time along the flow of the river. Then velocity of the river is _______
(A) 1 km / hour
(B) 2 km / hour
(C) 1.5 km / hour
(D) 2.5 km / hour
A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of the boat in still water and the stream are 10 km/hr and 4 km/hr respectively, the distance of the destination from the starting place is :
(A) 21 km
(B) 25 km
(C) 16 km
(D) 18 km
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