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 the correct option.
A) 30/20 hours	B) 39/28 hours	C) 30/32 hours	D) 30/13 hours	E) 32/34 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?