A man can row at 5 kmph in still water. If the velocity of the current is 1 kmph and it takes him 1 hour to row to a place and come back. how far is that place.	Answers:
A) .4 km B) 1.4 km C) 2.4 km D) 3.4 km E) None of these
Explanation:   Let the distance is x km   Rate downstream = 5 + 1= 
<gadget id="calculator">5 + 1</gadget>
<output>6</output>
6 kmph   Rate upstream= 5 - 1= 
<gadget id="calculator">5 - 1</gadget>
<output>4</output>
4 kmph   then   x/6 + x/4= 1 [because distance/speed = time]   =&gt; 2x + 3x = 12   =&gt; x = 12/5= 
<gadget id="calculator">12/5</gadget>
<output>12/5 = around 2.4</output>
2.4 km   Option 2.4 km
<result>C</result>
A man can row at 5 kmph in still water. If the velocity of the current is 1 kmph and it takes him 1 hour to row to a place and come back. how far is that place.