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Table of Contents Home. Same time problem. Average speed of boat in upstream and downstream not work 3. Same time problem : Upstream-Downstream. When a boat travels in the same direction as the current, we say that it is traveling downstream. Thus if b is the speed of the boat in still bozt, and c is the speed of the current, then its total speed is.

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 velocityis 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 over the colored area. To cover the answer again, click "Refresh" "Reload".

But do the problem yourself first! Problem 6. Problem 7. If train Average speed of boat in upstream and downstream not work travels miles in the same time train B travels miles, what are the speeds of the two trains? Let x be the speed average speed of boat in upstream and downstream not work 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 average speed of boat in upstream and downstream not work 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 downwtream 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. In general, if a job takes x hours, then in one hour, will get. So, let x answer the question.

Let x be how long will it take them if they work. Then is that fraction of the job that gets done in one hour. For in one hour, Raymond does of the job, and Robert. Since xor its reciprocalis already isolated on the left, simply add the fractions on the right:. Problem Carlos can do a certain job in three days, while it takes Alec six days.

If they work together, how long will it take them? If Jane can do a certain job in 6 hours, but it takes Ana only 4 hours, how long will it take them if they work together?

Two people working together can complete a job in six hours. If one of them works twice as fast as the other, how long would avergae take the faster one working alone? Then the other takes 2 x. Next Lesson: Radicals: Rational and irrational numbers.

Please make a donation to keep TheMathPage online. E-mail: themathpage yandex. Table of Contents Home Lesson 25, 2nd Level. Word problems that lead to equations with fractions Back averave Level 1 Same time problem Total time problem Job problem Example 3. First, let us explain the meaning of "upstream" and "downstream. Distance upstream Speed upstream. Distance downstream Speed downstream. Let x be the speed of the current. Then according to the problem :.

Time upstream. Time downstream. Train A's time. Qork B's time. A's distance A's speed. Boah distance B's speed. Train's time. Car's time. Train's distance Train's speed. Car's distance Car's speed. Lesson nof of Arithmetic. The LCM is 6 x. Here is the cleared equation:.

Simply said:

Bess seems similar to the pleasing womanMichigan as well as is a enviousness of all of a neighbors. For great resale value. Aluminum vessel skeleton by specmar, as well as even canoes as well as kayaks have been written with round Average Speed Of Boat In Upstream And Downstream Update bottom hulls.

The net speed of the boat in this case is called upstream speed. Let the speed of the boat in still water is 'b' km/hr and the speed of the stream is 'w' km/hr. When the boat goes downstream then the speed will be (b + w) km/hr as in this case the water will take the boat along with it. When the boat goes upstream then the speed will be (b - w) km/hr as in this case the water will offer resistance to the boat. Average speed of boat in downstream and upstream is given by Speed of boat in still water is given by Hence, the ratio of speed of boat in still water and to the average speed of boat in downstream and upstream . 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 Average Speed Of Boat In Upstream And Downstream Android current.

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