GRE Problem Solving Question 848
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Source: Other
An empty, cube-shaped swimming pool is filled part way with x cubic feet of water. It is then filled the rest of the way with y cubic feet of chlorine. Which of the following, in feet, expresses the depth of the swimming pool?
- A x + y
 -  B 

 -  C 

 -  D 

 -  E 

 
