omg. if u ride light you can get away with 50:1 but if you like to go places your engine will last longer if you use a 25:1 mix. i find that combination works best on most two strokes.
For future reference, always give year, make, engine size and model # when asking questions. We need all of that info to give an informed answer.
Sometimes the year can make a difference.
I just went to the Kawasaki web site and they recommend 32:1