A man can row upstream at 15 kmph and downstream at 35 kmph, and then find the speed of the man in still water? Answers:
A) 65
B) 86
C) 30
D) 78
E) 25
US = 15   DS = 35   M = (35 + 15)/2= 
<gadget id="calculator">(35 + 15)/2</gadget>
<output>25</output>
25   Answer: 25
<result>E</result>
A man can row upstream at 15 kmph and downstream at 35 kmph, and then find the speed of the man in still water?