A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 8 km in stationary water?	Choose one
A) 2 hours	B) 1 hour	C) 1 hour 15 min	D) 1 hour 30 min	E) 1 hour 10 min
speed (upstream) =2/1= 
<gadget id="calculator">2/1</gadget>
<output>2</output>
2 kmhr   speed (downstream)=1/(10/60)= 
<gadget id="calculator">1/(10/60)</gadget>
<output>6</output>
6 kmhr   speed in still water= 1/2 (2+6) = 4 kmhr   time taken in stationary = 8/4= 
<gadget id="calculator">8/4</gadget>
<output>2</output>
2 hrs   2 hoursNSWER:2 hours
<result>A</result>
A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 8 km in stationary water?