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? Choose one:
A) 5	B) 4	C) 7	D) 3	E) 5.1
M = 5.5   S = 1.5   DS = 7   US = 4   AS = (2 * 7 * 4) /11 = 5.1   Answer: 5.1
<result>E</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?