A man can row a boat at 20 kmph in still water. If the speed of the stream is 7 kmph, what is the time taken to row a distance of 60 km downstream?
Pick:
A) 30/18 hours  B) 37/13 hours  C) 80/13 hours  D) 20/9 hours  E) 30/43 hours
Speed downstream = 20 + 7= 
<gadget id="calculator">20 + 7</gadget>
<output>27</output>
27 kmph.   Time required to cover 60 km downstream= d/s = 60/27   = 20/9 hours.   Answer: 20/9 hours
<result>D</result>
A man can row a boat at 20 kmph in still water. If the speed of the stream is 7 kmph, what is the time taken to row a distance of 60 km downstream?