A man can row his boat with the stream at 22 km/h and against the stream in 10 km/h. The man's rate is?  Choose the correct choice from the following.
A) 1 kmph B) 2 kmph C) 7 kmph D) 6 kmph E) 3 kmph
6 kmphS =22   US =10   S = ?   S = (22 - 10)/2= 
<gadget id="calculator">(22 - 10)/2</gadget>
<output>6</output>
6 kmph   Answer:6 kmph
<result>D</result>
A man can row his boat with the stream at 22 km/h and against the stream in 10 km/h. The man's rate is?