A man can row upstream at 12kmph and downstream at 14kmph. Find man's rate in still water ? Choose the correct choice.
A) 5km/hr  B) 15km/hr  C) 13km/hr  D) 20km/hr  E) 7.5km/hr
Rate in still water = 1/2 (12+14) = 13km/hr   Answer is 13km/hr
<result>C</result>
A man can row upstream at 12kmph and downstream at 14kmph. Find man's rate in still water ?