A man whose speed is 5.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph, find his average speed for the total journey ?  Choices: A) 1 kmph B) 5 kmph C) 6 kmph D) 4 kmph E) 7 kmph
Explanation:   Speed of Man = 5.5 kmph   Speed of stream = 1.5 kmph   Speed in DownStream = 7 kmph   Speed in UpStream = 4 kmph   Average Speed = (2 x 7 x 4)/11 = 5 kmph.   Answer: 5 kmph
<result>B</result>
A man whose speed is 5.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph, find his average speed for the total journey ?