A man row in distance downstream in 80% of the time he rowed the aame distance upstream .What is the rayi of the sthram of the distance in stil water
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speed and time are inversely related to each other...... if distance is constant we can apply ratio method.....
speed of boat in still water is 4.5
speed of stream= 0.5
speed of boat in still water is 4.5
speed of stream= 0.5
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