The speed of a boat in upstream is 75 kmph and the speed of the boat downstream is 115 kmph. Find the speed of the boat in still water and the speed of the stream?
Choose one
A) 20 kmph  B) 76 kmph  C) 12 kmph  D) 97 kmph  E) 15 kmph
Speed of the boat in still water   = (75+115)/2   = 90 kmph. Speed of the stream   = (115-75)/2= 
<gadget id="calculator">(115-75)/2</gadget>
<output>20</output>
20 kmph.   20 kmphnswer:20 kmph
<result>A</result>
The speed of a boat in upstream is 75 kmph and the speed of the boat downstream is 115 kmph. Find the speed of the boat in still water and the speed of the stream?