A boat can travel with a speed of 16 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 60 km downstream.  Select the correct option.
A) 2 hours.  B) 3 hours.  C) 4 hours.  D) 5 hours.  E) 6 hours.
Speed downstream = (16 + 4) km/hr = 20 km/hr.   Time taken to travel 60 km downstream = 60/20= 
<gadget id="calculator">60/20</gadget>
<output>3</output>
3 hours.   Answer :3 hours.
<result>B</result>
A boat can travel with a speed of 16 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 60 km downstream.