Subject: mathqa
Question: a man whose speed is 6.5 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 ?
Option: 
A: 5.33 kmph
B: 4.00 kmph
C: 5.00 kmph
D: 6.00 kmph
Answer: A