- A
- B
- C
- D3 h
Step-by-Step Solution
First hour: . Left at per hour → h. Total h h assumes C starts at once.)
Answer: A)
Three taps A, B and C can fill a tank in 6, 8 and 12 hours. A and B are opened together, and C joins after 1 hour. How long does the tank take to fill, counted from the start?
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