You are given 10 black marbles, 10 white marbles, and two bowls. You may divide the marbles between.

You are given 10 black marbles, 10 white marbles, and two
bowls. You may divide the marbles between the bowls in any way that you like.
Then you are blindfolded, the bowls are moved around, and you reach into a bowl
and pick out a marble. How should you distribute the marbles to maximize your
chances of picking a white marble?