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�������, ��������, ���������: ������� � ���� ����� ��� ���� ��� ���� 2. A boat covers 14 kms in upstream and 20 kms downstream in 7 hours. Also it covers 22 kms upstream and 34 kms downstream in 10 hours. Find the speed of . Step 1: Calculate upstream and downstream speeds. Assume that the man�s speed in upstream be X km/h From the question, you know that his downstream speed is twice of upstream speed. Then, his downstream speed = 2X km/h You know the formula that, Man�s speed in still water = ? (Upstream speed + Downstream speed) =1/2 (X + 2X) = 3X/2. But. Dec 18, �� Example 19 A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, it can go 40 km upstream and 55 km down-stream. Determine the speed of the stream and that of the boat in still water. Let the speed of boat in still water be x km/hr & let the speed of stream be y .
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You can change your ad preferences anytime. Upcoming SlideShare. Like this presentation? Why not share! Health Impacts of Oil and Natural G Upstream Downstream Problems Class 10 1?? Embed Size px. Start on.

Show related SlideShares at end. 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 it 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 to 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. Train B's time. A's Upstream And Downstream Problems Class 10 Site??? distance A's speed. B's distance B's speed. Train's time. Car's time. Train's distance Train's speed. Car's distance Car's speed. If the both numbers differ by three, find the number. A number say z is exactly the four times the sum of its digits and twice the product of the digits. Find the numbers.

There are two points on a highway a,b. They are 70 km apart. An auto starts from A and another auto starts from B simultaneously. If they travel in the same direction, they meet in 7 hours, but if they travel towards each other they meet in 1 hour.

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