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Word problems: boat (upstream, downstream), bike (slow, fast) | Free Math Help Forum If the boat is traveling upstream, the current (which is C miles per hour) will be pushing against the boat, and the boat's speed will decrease by C miles per hour. The resulting speed of the boat (traveling upstream) is B-C miles per hour. On the other hand, if the boat is traveling downstream, the current will be pushing the boat faster, and the boat's speed will increase by C miles per hour. Class 10 maths upstream and downstream problem | boat problem PLEASE CHECK PLAYLIST FOR MORE VEDIOS. Now All videos lectures of class 10 Math's are free just. Adding the two equations, we get 2b = d + Upstream Downstream Boat Problems Via u. ? b = (d+u) / 2 which gives the speed of the boat in terms of downstream and upstream speed. Subtracting the equation (i) and (ii), we get d � u = 2w ? w = (d-u) / 2 which gives the speed of the stream in terms of downstream and upstream speed.
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The speed of a boat in still water is 30 mph. It takes the same time for the boat to travel 5 miles upstream as it does to travel 10 miles downstream.

Find the speed of the current. The key to this type of problem is same time. That will give the equation,. Now, speed, or velocity , is distance divided by time -- so many miles per hour:. Problem 5. If the boat travels 8 miles downstream in the same time it takes to travel 4 miles upstream, what is the speed of the current? To see the equation, pass your mouse Boat Upstream And Downstream Problems Free over the colored area. To cover the answer again, click "Refresh" "Reload". But do the problem yourself first! Problem 6.

Problem 7. If train A travels miles in the same time train B travels miles, what are the speeds of the two trains? Let x be the speed of train A. Problem 8. If the train covers miles in the same time the car covers 80 miles, what is the speed of each of them?

Let x be the speed of the train. Example 4. Total time problem. Katrina drove her car to Boston at a speed of kph kilometers per hour. She drove back at 75 kph. The total driving time was 7 hours. How far away was Boston? Problem 9. You have exactly h hours at your disposal. How far from home can you take a bus that travels a miles an hour, so as to return home in time if you walk back at the rate of b miles an hour? Example 5. Job problem.

Raymond can do a job in 3 hours, while it takes Robert 2 hours. How long will it take them if they work together? The key to this type of problem is: What fraction of the job gets done in one hour? For example, if a job takes 3 hours, then in one hour, will get done. In general, if a job takes x hours, then in one hour, will get done.

So, let x answer the question. Let x be how long will it take them if they work together. Then is that fraction of the job that gets done in one hour. Please choose your registered Email Id. Continue the Learning and Knowledge Sharing journey.

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Please enter your name. Please enter your mobile number. Please enter valid Mobile number. Select Class Please select the class. Forgot Password? OTP has been re-sent. OTP has been sent to your mobile. Sri haripriya Ramesh Jul 15, A motorboat takes 6 hours to cover km down stream and 30km upstream.

If the motorboat goes 75km down stream and returns back to its starting point in 8hours, find the speed of the motorboat in still water and the rate of the stream. Time for km downstream and 30 km upstream And it takes 6 hrs to cover downstream and upstream. Then Let us denote by p and by q. Recommend 1 Comment 0. Kishore Kumar.

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