A boat running downstream covers a distance of 22 km in 4 hours while for covering the same distance upstream, it takes 5 hours. What is the speed of the boat in still water? Choose the correct choice from the following:	A) 2.75	B) 5.95	C) 7.95	D) 3.25	E) 4.95
Speed downstream =22/4= 
<gadget id="calculator">22/4</gadget>
<output>11/2 = around 5.5</output>
5.5 kmph   Speed upstream=22/5= 
<gadget id="calculator">22/5</gadget>
<output>22/5 = around 4.4</output>
4.4 kmph   Speed of the boat in still water=(5.5+4.4)/2= 
<gadget id="calculator">(5.5+4.4)/2</gadget>
<output>4.95</output>
4.95 kmph   Answer: 4.95
<result>E</result>
A boat running downstream covers a distance of 22 km in 4 hours while for covering the same distance upstream, it takes 5 hours. What is the speed of the boat in still water?