A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is? Answers.
A) 5
B) 6
C) 7
D) 8
E) 9
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?