A rower can row upstream at 20 kph and downstream at 34 kph. What is the speed of the rower in still water?	Choices
A) 26 B) 27 C) 28 D) 29 E) 30
Let V be the rower's speed in still water.   Let S be the speed of the current in the stream   V-S = 20   V+S = 34   When we add the two equations, we get: 2V = 54   Then V = 27 kph.   The answer is 27.
<result>B</result>
A rower can row upstream at 20 kph and downstream at 34 kph. What is the speed of the rower in still water?