- A4:00 p.m.
- B10:00 p.m.
- C5:30 p.m.
- D2:00 p.m.
Step-by-Step Solution
After plugging, of the tank is still empty and A alone fills per hour, so it needs h. 10 a.m. + 7 h 30 min = 5:30 p.m. (4 p.m. forgets the leak's lost water.)
Answer: C) 5:30 p.m.
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