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 78 km downstream? Choose the correct answer
A) 3 hours	B) 33/13 hours	C) 31/13 hours	D) 30/13 hours	E) 30/14 hours
Speed downstream = 20 + 6= 
<gadget id="calculator">20 + 6</gadget>
<output>26</output>
26 kmph.   Time required to cover 78 km downstream= d/s = 78/26= 
<gadget id="calculator">78/26</gadget>
<output>3</output>
3 hours.   3 hoursnswer:3 hours
<result>A</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 78 km downstream?