A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is?  Select the correct option:
A) 5 B) 6 C) 7 D) 54 E) 3
US = 25   DS = 35   M = (35 - 25)/2 = 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?