A boat can move upstream at 14 kmph and downstream at 18 kmph, then the speed of the current is?  Options:	A) 5	B) 6	C) 8	D) 4	E) 2
US = 14   DS = 18   M = (18 - 14)/2= 
<gadget id="calculator">(18 - 14)/2</gadget>
<output>2</output>
2 Answer:2
<result>E</result>
A boat can move upstream at 14 kmph and downstream at 18 kmph, then the speed of the current is?