A boat running downstream covers a distance of 12 km in 2 hours while for covering the same distance upstream, it takes 3 hours. What is the speed of the boat in still water?  Options:  A) 8 kmph  B) 5 kmph  C) 4 kmph  D) 6 kmph  E) 7 kmph
Speed downstream =12/2= 
<gadget id="calculator">12/2</gadget>
<output>6</output>
6 kmph   Speed upstream=12/3= 
<gadget id="calculator">12/3</gadget>
<output>4</output>
4 kmph   Speed of the boat in still water= 6+4 / 2= 5 kmph   ANSWER:5 kmph
<result>B</result>
A boat running downstream covers a distance of 12 km in 2 hours while for covering the same distance upstream, it takes 3 hours. What is the speed of the boat in still water?