The speed at which a man can row a boat in still water is 6 km/hr. If he rows downstream, where the speed of current is 3 km/hr, how many seconds will he take to cover 110 meters?
Choose the correct choice from the following answers.
A) 40 B) 44 C) 48 D) 52 E) 56
The speed of the boat downstream = 6 + 3= 
<gadget id="calculator">6 + 3</gadget>
<output>9</output>
9 km/hr   9 km/hr * 5/18= 2.5 m/s   The time taken to cover 110 meters = 110/2.5= 
<gadget id="calculator">110/2.5</gadget>
<output>44</output>
44 seconds.   The answer is 44.
<result>B</result>
The speed at which a man can row a boat in still water is 6 km/hr. If he rows downstream, where the speed of current is 3 km/hr, how many seconds will he take to cover 110 meters?