SOLUTION: A man can row three-quarters of a kilometer against the stream in 45/4 minutes. The speed (in km/hr) of the man in still water ?

Question 1038493: A man can row three-quarters of a kilometer against the stream in 45/4 minutes. The speed (in km/hr) of the man in still water ?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A man can row three-quarters of a kilometer against the stream in 45/4 minutes. The speed (in km/hr) of the man in still water ?
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r = rowing speed (in still water)
c = current
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r - c = d/t = (3/4)km/(45/4)/60))hr
r - c = (3/4)/(45/240) km/hr
r - c = 720/135 km/hr
r - c = 16/3 km/hr
r = c + 16/3 km/hr
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He can row 16/3 km/hr plus whatever c for the current is.
The current wasn't spec'ed.
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