A man can row a boat at 20 kmph in still water. If the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream?  Select:
A) 30/17 hours  B) 30/15 hours  C) 36/13 hours  D) 30/13 hours  E) 80/13 hours
Speed downstream   = 20 + 6= 
<gadget id="calculator">20 + 6</gadget>
<output>26</output>
26 kmph.   Time required to cover 60 km downstream= d/s = 60/26   = 30/13 hours.   Answer: 30/13 hours
<result>D</result>
A man can row a boat at 20 kmph in still water. If the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream?