A boat can move upstream at 32 kmph and downstream at 30 kmph, then the speed of the current is?	Choices:
A) 5  B) 9  C) 1  D) 9  E) 5
US = 32   DS = 30   M = (32 - 30)/2= 
<gadget id="calculator">(32 - 30)/2</gadget>
<output>1</output>
1   Answer: 1
<result>C</result>
A boat can move upstream at 32 kmph and downstream at 30 kmph, then the speed of the current is?