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Boats and Streams - Aptitude Questions and Answers

Boats and Streams is an essential topic for many competitive exams. Many varieties of questions can be framed from this area. We use the fundamental concepts of time speed and distance only to solve elementary questions on Boats and Streams. However, some types of questions are tricky and take lots of time to solve by applying textbook approach.

Fortunately, there are some shortcut formulas available to handle such problems. In this article, besides an understanding of the basic concepts of boat kevel streams, we will also learn quesrions tricks to solve some exceptional boqt.

Some shortcut formulas related to the speed of boats and streams is handy as we require them frequently. Below are the lists of the formulas:. Question 1: A boat is rowed down a river 28 km in 4 hours and up a river 12 km in 6 hours.

Find the speed of the boat and the river. Boa 2: A man rows 18 km down a river in 4 hours with the stream and returns in 12 hours. Find his speed and srteam the speed of the boat and stream cat level questions 30. Question The speed of the boat in the still water is 6 kpmh, and the boat and stream cat level questions 30 of the stream is 2 kmph. Steram boat goes a certain distance down the stream and comes back upstream to the same place from where it started.

Find the average speed of the boat in the entire journey. Average Speed. Important: If the boat takes t down and t up respectively to travel same downstream and upstream distance, then sgream the following relation:. Question 4: A levep takes 6 hours to go downstream and comes back upstream in 12 hours.

Find the ratio of the speed of the boat and the speed of the stream. Question 5: A man rows 10 km upstream and back again to the starting point in 55 min. If the speed of wtream stream is 2 kmph, then find the speed of the boat in still water. It takes boat and stream cat level questions 30 hr to reach its destination and return back if river has no flow. For the same journey it takes 16 hr if river is flowing. Find speed of flow of river.

Your email address will not be published. Skip to content Boats and Streams is an essential topic for many competitive exams. Boats and Streams � Terminologies: Stream: It implies that the water in boat and stream cat level questions 30 river is moving or flowing.

Standard Method: Let one side the distance be d km. Boaf, the average speed of the boat Shortcut Formula: Average Speed Finding the ratio of speeds of the boat and the stream Important: If the boat takes t down and t up respectively to travel same downstream and upstream distance, then we the following relation: Question 4: A boat takes boat and stream cat level questions 30 hours to go downstream and comes back upstream in 12 hours.

Standard Method: Let Boat And Stream Cat Level Questions Yu the common distance be d km. Finding the total time of the journey. Shortcut Formula: Let the speed of the boat in still water be x kmph. Leave a Comment Cancel Reply Your email address will not be published.

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Question: Ramesh can row a certain distance downstream in 6 hrs and returns the same distance in 9 hrs. Formula 4: A man rows a certain distance downstream in X hrs and returns the same distance in Y hrs. Let us now jump to the questions, 1. A boat covers a distance of 30 km in 3 hrs in the direction of stream and covers same distance in 5 hrs in opposite direction of the stream.

Find speed of the boat in still water. Therefore, in how much time will it cover a distance of 70 km downstream? Find out his speed in still water. How much distance does he cover in 2 hrs during upstream? How much time will it take to cover km in still water? A man rows to a place at a distance of So, keep practicing!

Enroll Now Rs. Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. Downstream : It means moving along in the direction of the flow of the stream.

There can also be other questions in calculation of time and some of them can be easily be solved using the formulas given below. Let d the distance. Sol This question requires direct use of the formula mentioned earlier. Average Speed-based question: As the name tells, we need to calculate the average speed of the boat while you are upstream and downstream speed.

Now we are in stage of using the average speed formula. Distance based question: In these kind, you have to calculate distance travelled by the boat when time, speed of still water and stream is given. There can be two different formulas to calculate the distance for two distant cases.

If you Like this post then share it! Leave a Reply Cancel reply Your email address will not be published. If they had been travelling in still water they would have met at a point R which is thrice as distant from Q as it is from P.

If Sujay had been travelling along the stream and Vijay against it they would have met in 1 hour. What is the time in minutes they would take to meet if Vijay had been travelling along the stream and Sujay against it?

Solution: In both the cases the distance between them would be the same and also their relative speed moving towards each other would also be the same, because while calculating relative speed the speed of the stream would get cancelled.

Hence both ways the time taken will be 60 minutes. A group of people was rowing a boat upstream in a river. They spotted a dog drowning and flowing downstream with the river. To save the dog from drowning, they immediately started rowing at their full capacity i. As soon as they reached the dog, they stopped rowing. It took them 18 seconds to pull the dog into the boat, while both the dog and the boat were flowing with the water current.

As soon as they pulled the dog into the boat, they started rowing downstream at their full capacity and reached the point where they first spotted the dog in 45 seconds. What was the distance in metres between the dog and the boat when they first spotted him? B is the point where they met the dog. The boat travelled from D to B upstream and in the same time the dog travelled downstream with the speed of stream from A to B. In Boat And Stream Cat Level Questions Radio the time the boat travelled DB upstream, the dog travelled the distance AB downstream with the water current.

A boat goes from A to B upstream in 6 hours and comes back from B to A downstream in 4 hours. If the speed of the stream is one fifth of the speed of the boat, then find the distance in km between A and B? Preparation tips for CAT � Beginners.

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