A boatman can row 96 km downstream in 8 hr. If the speed of the current is 4 km/hr, then find in what time he will be able to cover 8 km upstream ?
Choose the correct choice from the following answers
A) 3 hrs	B) 7 hrs	C) 9 hrs	D) 2 hrs	E) 6 hrs
Explanation:   Speed in downstream = 96/8= 
<gadget id="calculator">96/8</gadget>
<output>12</output>
12 kmph   Speed of current= 4 km/hr   Speed of the boatman in still water = 12 â€“ 4 = 8 kmph   Speed in upstream = 8 â€“ 4 = 4 kmph   Time taken to cover 8 km upstream = 8/4= 
<gadget id="calculator">8/4</gadget>
<output>2</output>
2 hours.   Answer: 2 hrs
<result>D</result>
A boatman can row 96 km downstream in 8 hr. If the speed of the current is 4 km/hr, then find in what time he will be able to cover 8 km upstream ?