A man can row a boat at 18 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 the correct choice
A) 30/16 hours	B) 80/13 hours	C) 15/6 hours	D) 30/13 hours	E) 50/13 hours
Speed downstream = 18 + 6= 
<gadget id="calculator">18 + 6</gadget>
<output>24</output>
24 kmph.   Time required to cover 60 km downstream= d/s = 60/24   = 15/6 hours.   Answer:15/6 hours
<result>C</result>
A man can row a boat at 18 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?