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Dear Reader, problems under boats and streams are not only easy to solve but interesting as. In this tutorial, you will see 5 important types of problems.

At the end of the tutorial, you will find short online practice test. Let us begin the tutorial. In this type, you will be finding bboat of boat Speed Of The Boat Upstream Errors in still water i. You have to remember a very simple formula as shown. Find the speed of the boat in still water. Solution: From the question, you can write down the below values. You have to substitute the above values in the below formula. This type is similar to type 1.

But there is one difference. Here you have to find speed of stream and not the speed of the boat. You have to use the below formula to find speed of stream. Example Question 2: A man rows downstream 30 km and speed of the boat in upstream machine 12 km. If he takes 4 hours to cover each distance, then the velocity of the current is:. Solution: In this question, downstream and upstream speeds are not given directly.

Hence you have to calculate them. Step 3: Calculation of speed of stream You have The Speed Of The Boat Upstream 733 to substitute values got in steps 1 and 2 in below formula to upstrream the speed of the stream.

In this type, you have to find distance of places based on given conditions. Below example will help you to understand better. If in a river running at 2 km an hour, it takes him 40 minutes to row to a place and return back, how far off is the place?

Speed of the boat in upstream machine man rows to a particular boxt and comes. You have to calculate the distance of this place. Let this distance be X. See the below diagram to understand clearly. Man starts from A, travels to B and comes.

Therefore, above equation becomes. Also we have calculated downstream and upstream speeds at the madhine see values 1 and 2. In question, speed of the boat in upstream machine can see that the man takes 40 minutes to travel to B and come back to A. You have to convert this to hours and apply in above equation. We are converting from minutes to hours because we are using speed values in km per hour units. Upshream takes him twice as long to row up as to speed of the boat in upstream machine down the river.

Find the rate of the stream. Solution: Step 1: Calculate upstream and downstream speeds. Based on our assumptions, you can easily calculate upstream and downstream speeds as shown. In this type, you have to form linear equations based on conditions given. You have to solve those equations to find the answer.

Example Question 5: Kavin can row 10 km upstream and 20 km downstream in 6 hours. Also, he can row 20 km upstream and 15 km downstream in 9 hours. Find the rate of the current and the speed of the man in still water. Solution: You have to make below assumptions to form equations. You already know the below equation.

If you are not clear about this, refer to the equation in type 3. Note: To solve such linear equations, there is another simple shortcut. Here is the video link to that shortcut. From the values of u and v, you can find the downstream and upstream speeds epeed shown.

Speed of the boat in upstream machine, you know the formula for speed of the current. Ready for short practice test? Start Test Here. You can type your doubts in the comments section. You can also suggest improvements to the above tutorial. Homepage Tutorials. Tags: Boats and Streams Problems.

Abstract:

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The upstream speed of boat is 40km/hr and speed in still water is 55km/hr what is down strem speed 2 See answers ramsid ramsid Answer: 70m/s _____ OLegion OLegion Answer: 70 Km/Hr. Step-by-step explanation: upstream speed of boat =40km/hr. Speed in still water=55Km/hr. So. Upstream Leg d = distance rowed one way = 12 miles v = rowing speed in still water =?, mph c = speed of current =?, mph t1 = time to row upstream = hr d = (v - c)*t1 (v - c) = d/t1 = 12 mi/ hr = mi/ hr Downstream Leg t2 = time to r. speed of current=3/13 of speed of boat. b is Speed Of The Boat Upstream Modeling the correct option. Step-by-step explanation: Let speed of the boat = x m/min. and speed of current = y m/min. Therefore, we have. Upstream speed = (x-y) Downstream speed = (x+y) Now, it has been given that boat travels m upstream in 15 mins. Thus, we have the equation.

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