A boat on a river travels between two points, 20 mi apart, in 1 h. The return trip aganist the current takes 2.5 hours. What is the boats speed (in still water)? How fast does the current in the river flow?
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A boat on a river travels between two points, 20 mi apart, in 1 h. The return trip aganist the current takes 2.5 hours. What is the boats speed (in still water)?
How fast does the current in the river flow?
Given:
Let speed of boat in still water = v
Let speed of current = w
Case 1: boat travelling with the current
Hence we get:
Case 2: boat travelling against the current
Hence we get:
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