- A4 p.m.
- B5 p.m.
- C3:30 p.m.
- D4:45 p.m.
Step-by-Step Solution
By 10 a.m.: . Then an hour: h after 10 a.m., i.e. 4:45 p.m.
Answer: D) 4:45 p.m.
A fills a tank in 10 hours, B in 12 hours, and C empties it in 20 hours. A is opened at 9 a.m.; B and C are both opened at 10 a.m. When is the tank full?
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