AP Physics Problem: Fluids

<p>OK, I am having a ton of trouble figuring this out. The problem says:</p>

<p>"Two circular holes, one larger than the other, are cut in the side of a large water tank whose top is open to the atmopshere. The center of one of these holes is located twice as far beneath the surface of the water as the other. The volume flow rate of the water coming out of the holes is the same. (a) Determine which hole is located nearest the surface of the water. (b) Calculate the ratio of the radius of the larger hole to the radius of the smaller hole. "</p>

<p>I figure for (a), the smaller one has to be closer to the surface but I have no idea how to approach (b). Can anyone help me out?</p>

<p>Help? anyone?</p>