A man can row his boat with the stream at 6 km/h and against the stream in 2 km/h. The man's rate is?	Options:
A) 1 kmph	B) 2 kmph	C) 5 kmph	D) 7 kmph	E) 8 kmph
DS = 6   US = 2   S = ?   S = (6 - 2)/2= 
<gadget id="calculator">(6 - 2)/2</gadget>
<output>2</output>
2 kmph   Answer: 2 kmph
<result>B</result>
A man can row his boat with the stream at 6 km/h and against the stream in 2 km/h. The man's rate is?