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.	Choose the correct choice from the following options.
A) 4
B) 5
C) 6
D) 7
E) 8
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.   4nswer: Option 4
<result>A</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.