A person can row upstream 2 kmph and downstream 8 kmph. Find the rate of the stream and person rate in still water.	Choose the correct option:
A) 1,5
B) 2,5
C) 5,5
D) 3,5
E) 5,1
Explanation:   Please remember,   If a is rate downstream and b is rate upstream   Rate of current = 1/2(a-b)   Rate in still water = 1/2(a+b)   =&gt; Rate of current = 1/2(8-2) = 3 kmph   =&gt; Rate in still water = 1/2(8+2) = 5 kmph   Option 3,5
<result>D</result>
A person can row upstream 2 kmph and downstream 8 kmph. Find the rate of the stream and person rate in still water.