Concept of Upstream and Downstream with shortcut trick to solve the problem in competitive exams. 12??/6??/�� Upstream = (u?v) km/hr, where �u� is the speed of the boat in still water and �v� is the speed of the stream; Downstream = (u+v)Km/hr, where �u� is the speed of the boat in still water and �v� is the speed of the stream; Speed of Boat in Still Water = ? (Downstream Speed + Upstream Speed)������������ �����: 40 ���. This video will help you in understanding the shortcuts for solving Problems on Boats and Streams and formulas for calculating the upstream and the downstream speed.
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upstream and downstream problems shortcuts class took only 45 minutes to return. Problem 2 It took an hour for a boat to go six miles upstream. ����� ������ � ����� �������� ���� ������� ���� ����� ������, �� � �������� ��� ����������� As they explained in the "Hint" section, this speed is the difference of the boat speed in still water u and the current speed v.
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