Free GRE Practice Question

Question 1 of 1
ID: GRE-MCQ-025
Section: GRE Quantitative Reasoning - Multiple Choice with one answer
Topic: Word Problems
Difficulty level: Hard

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Pipe A can fill a tank in 6 hours and pipe B can fill the same tank in 9 hours. Both pipes are opened together, and after 2 hours pipe A is closed. How many additional hours does pipe B need to finish filling the tank?

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