A boat can travel 2.5 times the distance down the stream than up the stream in the same time. If the speed of the current is 3 KMPH, Find the speed of the boat in still water	Choose the correct answer:
A) 7 B) 10 C) 15 D) 20 E) 25
Simple question, messy language.   Lets say boat's speed is B and current's speed is C.   Upstream speed : B - C   Downstream speed : B + C   Distance will be the same both times. lets say D.   given : time it takes upstream = 2.5 times time it takes downstream   D/(B + C) = 2.5 * [D/(B - C)]   Solving B = 2.3 C   given : C is 3 KMPH   So B is 6.9~=7 KMPH   7
<result>A</result>
A boat can travel 2.5 times the distance down the stream than up the stream in the same time. If the speed of the current is 3 KMPH, Find the speed of the boat in still water