A man can row his boat with the stream at 12 km/h and against the stream in 8 km/h. The man's rate is?
Select the correct option:
A) 2 kmph B) 6 kmph C) 7 kmph D) 4 kmph E) 9 kmph
Explanation:   DS = 12   US = 8   S = ?   S = (12- 8)/2= 
<gadget id="calculator">(12- 8)/2</gadget>
<output>2</output>
2 kmph   2 kmphnswer: 2 kmph
<result>A</result>
A man can row his boat with the stream at 12 km/h and against the stream in 8 km/h. The man's rate is?