A man can row upstream at 25 kmph and downstream at 37 kmph, and then find the speed of the man in still water?	Pick:
A) 65
B) 86
C) 30
D) 78
E) 31
US = 25   DS = 37   M = (37 + 25)/2= 
<gadget id="calculator">(37 + 25)/2</gadget>
<output>31</output>
31   Answer: 31
<result>E</result>
A man can row upstream at 25 kmph and downstream at 37 kmph, and then find the speed of the man in still water?