A man can row his boat with the stream at 6 km/h and against the stream in 4 km/h. The man's rate is?  Options.
A) 1 kmph	B) 6 kmph	C) 8 kmph	D) 9 kmph	E) 3 kmph
DS = 6   US = 4   S = ?   S = (6 - 4)/2= 
<gadget id="calculator">(6 - 4)/2</gadget>
<output>1</output>
1 kmph   1 kmphnswer: 1 kmph
<result>A</result>
A man can row his boat with the stream at 6 km/h and against the stream in 4 km/h. The man's rate is?