Hello to all! We have a very difficult homework and I don't know to answer it. I thing it is about Quadratic Equation. Here is the word problem:


A swimming pool holds 600 cubic meters of water. It can be drained at the rate of 9 minutes faster than it can be filled. If it takes half an hour to fill it than to drain it, find the drainage rate.


Please, I am begging you… I want the answer and how to solve it……
Thank You Very much and your right answer could be greatly appreciated.
Thank You once again….