A man swims downstream 40 km and upstream 56 km taking 8 hours each time, what is the speed of the man in still water?
Select the correct option:	A) 6	B) 24	C) 8	D) 12	E) 44

Rationale: "40 - - - 8 ds = 5 ? - - - - 1 56 - - - - 8 us = 7 ? - - - - 1 m = ? m = ( 5 + 7 ) / 2 = 6 answer : a"
Answer: A