A man can row downstream at 18 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively?	Pick one:	A) 14,7	B) 64,4	C) 18,4	D) 14, 4	E) 12,4
Let the speed of the man in still water and speed of stream be x kmph and y kmph respectively.   Given x + y = 18 --- (1)   and x - y = 10 --- (2)   From (1) &amp; (2) 2x = 28 =&gt; x   = 14, y = 4.   Answer:14, 4
<result>D</result>
A man can row downstream at 18 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively?