medium · GMAT Quantitative Reasoning
Machine X can complete a task in 15 hours, while Machine Y can complete the same task in 10 hours. Both machines begin working together, but Machine X stops after 4 hours.
How many additional hours will it take Machine Y to finish the task alone?
- 4 hours
- 2 hours
- 5 hours
- 10/3 hours (≈ 3.33 hours)
- 6 hours
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