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?
Choose the correct choice from the following answers:  A) 6  B) 5  C) 3  D) 4  E) 9
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: 4
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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?