A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.  Answers:	A) 2	B) 4	C) 6	D) 5	E) 3
Speed downstream = (13 + 4) km/hr = 17 km/hr.   Time taken to travel 68 km downstream = 68/17= 
<gadget id="calculator">68/17</gadget>
<output>4</output>
4 hrs   Ans - 4
<result>B</result>
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.