Someone explain this algebra to me?

KnottedBrain asked:


Two water hoses being used simultaneously require two hours to fill an outdoor pool. If only the larger hose were used, this task would take three hours. Let x represent the time needed if only the smaller hose were used to fill the pool. Write an expression that represents the correct solution.

The equation that I was told that could answer this is:
2/3 + 2/x = 1

Ok.. why 2/3? What exactly is that representing? I guess it's saying (2 hours for both hoses divided by 3 hours for the large hose), but why? What information does that return?

Outdoor Resin Furniture