A man can row upstream at 25 kmph and downstream at 31 kmph, and then find the speed of the man in still water?
Choose the correct choice:
A) 22	B) 28	C) 30	D) 27	E) 18
US = 25   DS = 31   M = (31 + 25)/2= 
<gadget id="calculator">(31 + 25)/2</gadget>
<output>28</output>
28   Answer:28
<result>B</result>
A man can row upstream at 25 kmph and downstream at 31 kmph, and then find the speed of the man in still water?