A man can row a boat at 10 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? Choose one:
A) 30/18
B) 30/21
C) 30/11
D) 30/7
E) 30/8
Speed downstream = 10 + 6 = 26 kmph.   Time required to cover 60 km downstream = d/s = 60/16   = 30/8 hours.   Answer:30/8
<result>E</result>
A man can row a boat at 10 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?