A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a place and come back, how far is the place?
Choose the correct choice from the following
A) 2.4 km	B) 2.5 km	C) 3 km	D) 3.6 km	E) None
Solution   Speed downstream = (5 + 1)= 
<gadget id="calculator">(5 + 1)</gadget>
<output>6</output>
6kmph.   Speed upstream= (5 -1)= 
<gadget id="calculator">(5 -1)</gadget>
<output>4</output>
4 kmph.   Let the required distance be x km.   Then, x/6 + x/4= 1   = 2x + 3x = 12   ‹=›5x = 12   ‹=›x = 2.4.   2.4 kmnswer 2.4 km
<result>A</result>
A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a place and come back, how far is the place?