A man can row upstream at 12 kmph and downstream at 38 kmph, and then find the speed of the man in still water? Pick one.
A) 11  B) 25  C) 30  D) 88  E) 34
US = 12   DS = 38   M = (12 + 38)/2= 
<gadget id="calculator">(12 + 38)/2</gadget>
<output>25</output>
25   Answer:25
<result>B</result>
A man can row upstream at 12 kmph and downstream at 38 kmph, and then find the speed of the man in still water?