A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is?
A. 5 kmph  Choose the correct choice from the following choices:
A) 5  B) 8  C) 9  D) 3  E) 2
US = 25   DS = 35   M = (35 - 25)/2= 
<gadget id="calculator">(35 - 25)/2</gadget>
<output>5</output>
5   5nswer:5
<result>A</result>
A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is?
A. 5 kmph