A man can row downstream at 20 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively?	Choices: A) 13, 5 B) 15, 2 C) 15, 5 D) 14, 5 E) 12, 5
Let the speed of the man in still water and speed of stream be x kmph and y kmph respectively.   Given x + y = 20--- (1)   and x - y = 10 --- (2)   From (1) &amp; (2) 2x = 30 =&gt; x = 15, y = 5.   Answer:15, 5
<result>C</result>
A man can row downstream at 20 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively?