A man can row a boat at 18 kmph in still water. If the speed of the stream is 3 kmph, what is the time taken to row a distance of 48 km downstream? Choose the correct choice from the following choices
A) 30/16 hours B) 30/33 hours C) 16/7 hours D) 16/13 hours E) 15/13 hours
Speed downstream = 18 + 3= 
<gadget id="calculator">18 + 3</gadget>
<output>21</output>
21 kmph.   Time required to cover 48 km downstream= d/s = 48/21 = 16/7 hours.Answer:16/7 hours
<result>C</result>
A man can row a boat at 18 kmph in still water. If the speed of the stream is 3 kmph, what is the time taken to row a distance of 48 km downstream?