A man whose speed is 6 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
A) 7
B) 5.6
C) 6
D) 9
E) 3
M = 6.0   S = 1.5   DS = 7.5   US = 4.5   AS = (2 * 7.5 * 4.5) /12 = 5.6   Answer:5.6
<result>B</result>
A man whose speed is 6 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?