A boat can travel with aspeed of 30km/hr in still water. If the speed of the stream is 5km/hr, find the time taken by the boat to go 70km downstream.
Choose the correct option:
A) 1 hr B) 2 hrs C) 3 hrs D) 4 hrs E) 5 hrs
Speed downstream = (30 + 5) km/hr = 35 km/hr.   Time taken to travel 68 km downstream = 70/35= 
<gadget id="calculator">70/35</gadget>
<output>2</output>
2 hrs.   2 hrs
<result>B</result>
A boat can travel with aspeed of 30km/hr in still water. If the speed of the stream is 5km/hr, find the time taken by the boat to go 70km downstream.