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1. It takes 5 hours to fill a container using machine A. The same container can be filled using machine B in 10 hours. When the container is full, Machine C can fully empty the container in 20 hours. If all three machines start working on the same empty cont
- A. 1/2 hours
- B. 1/2 hours
- C. 1/2 hours
- D. 1/2 hours
Answer: Option B
Explanation:
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