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Boats and Streams - Important Formulas, Logical Reasoning | Quantitative Aptitude (Quant) - CAT PDF Download

 

Important Formulas - Boats and Streams

 

1. Downstream

In water, the direction along the stream is called downstream.

 

2. Upstream

In water, the direction against the stream is called upstream.

 

3. Let the speed of a boat in still water be u km/hr and the speed of the stream be v km/hr, then 

Speed downstream = (u + v) km/hr 
Speed upstream = (u - v) km/hr.


 

4. Let the speed downstream be a km/hr and the speed upstream be b km/hr, then 
Boats and Streams - Important Formulas, Logical Reasoning | Quantitative Aptitude (Quant) - CAT



Some more shortcut methods

5. Assume that a man can row at the speed of x km/hr in still water and he rows the same distance up and down in a stream which flows at a rate of y km/hr. Then his average speed throughout the journey 
 

Boats and Streams - Important Formulas, Logical Reasoning | Quantitative Aptitude (Quant) - CAT

 

6. Let the speed of a man in still water be x km/hr and the speed of a stream be y km/hr. If he takes tt hours more in upstream than to go downstream for the same distance, the distance  Boats and Streams - Important Formulas, Logical Reasoning | Quantitative Aptitude (Quant) - CAT


 

7. A man rows a certain distance downstream in t1 hours and returns the same distance upstream in t2 hours. If the speed of the stream is y km/hr, then the speed of the man in still water 
Boats and Streams - Important Formulas, Logical Reasoning | Quantitative Aptitude (Quant) - CAT


 

8. A man can row a boat in still water at x km/hr in a stream flowing at y km/hr. If it takes him tt hours to row a place and come back, then the distance between the two places 
Boats and Streams - Important Formulas, Logical Reasoning | Quantitative Aptitude (Quant) - CAT


 

9. A man takes nn times as long to row upstream as to row downstream the river. If the speed of the man is x km/hr and the speed of the stream is y km/hr, then 
Boats and Streams - Important Formulas, Logical Reasoning | Quantitative Aptitude (Quant) - CAT

The document Boats and Streams - Important Formulas, Logical Reasoning | Quantitative Aptitude (Quant) - CAT is a part of the CAT Course Quantitative Aptitude (Quant).
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FAQs on Boats and Streams - Important Formulas, Logical Reasoning - Quantitative Aptitude (Quant) - CAT

1. What are the important formulas to solve problems related to Boats and Streams?
Ans. The important formulas to solve problems related to Boats and Streams are: 1. Speed of a boat in still water = (Speed of downstream + Speed of upstream) / 2 2. Speed of a boat in still water = (Speed of downstream - Speed of upstream) / 2 3. Speed of downstream = Speed of boat in still water + Speed of stream 4. Speed of upstream = Speed of boat in still water - Speed of stream 5. Time taken to cover a certain distance downstream = Distance / Speed of downstream 6. Time taken to cover a certain distance upstream = Distance / Speed of upstream
2. How can logical reasoning be applied to solve problems related to Boats and Streams?
Ans. Logical reasoning can be applied to solve problems related to Boats and Streams by analyzing the given information and making logical deductions. Here are a few steps to solve such problems using logical reasoning: 1. Read the problem carefully and understand the given information. 2. Identify the variables involved, such as the speed of the boat, speed of the stream, and the distance. 3. Use the given information to form equations or inequalities. 4. Make logical deductions based on the equations to find the required solution. 5. Verify the solution by checking if it satisfies all the given conditions.
3. How can the concept of Boats and Streams be applied in real-life scenarios?
Ans. The concept of Boats and Streams can be applied in real-life scenarios in various ways. Here are a few examples: 1. Calculating the time taken by a boat to travel downstream or upstream in a river. 2. Determining the speed at which a boat should travel to cross a river in the shortest time. 3. Calculating the speed of a boat in still water based on the time taken to travel a certain distance downstream or upstream. 4. Analyzing the effect of the speed of a stream on the overall speed of a boat. 5. Solving problems related to rowing, where the speed of a person rowing against or with a stream is involved.
4. What are some common mistakes to avoid while solving problems related to Boats and Streams?
Ans. Some common mistakes to avoid while solving problems related to Boats and Streams are: 1. Misinterpreting the given information or not understanding the question properly. 2. Using incorrect formulas or equations. 3. Forgetting to consider the relative speeds of the boat and the stream while calculating the overall speed. 4. Making calculation errors or not simplifying the equations properly. 5. Not checking the solution against the given conditions or constraints.
5. How can I improve my problem-solving skills related to Boats and Streams?
Ans. To improve your problem-solving skills related to Boats and Streams, you can follow these tips: 1. Practice solving a variety of problems related to Boats and Streams regularly. 2. Understand the underlying concepts and formulas thoroughly. 3. Break down complex problems into smaller, manageable parts. 4. Develop a systematic approach to solve problems, such as identifying variables, forming equations, and making logical deductions. 5. Review your solutions and analyze any mistakes or areas for improvement. 6. Seek additional resources, such as textbooks or online tutorials, to enhance your understanding of the topic. 7. Collaborate with peers or join study groups to discuss and solve problems together.
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