A man whose speed is 7.5 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?	Select the correct option.
A) 8.2kmph
B) 9.0kmph
C) 7.0kmph
D) 6.5kmph
E) 7.2kmph
M = 7.5   S = 1.5   DS = 9   US = 6   AS = (2 * 9 * 6) /15= 
<gadget id="calculator">(2 * 9 * 6) /15</gadget>
<output>36/5 = around 7.2</output>
7.2   Answer:7.2kmph
<result>E</result>
A man whose speed is 7.5 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?