- A4 p.m.
- B3 p.m.
- C2 p.m.
- D12:27 p.m.
Step-by-Step Solution
7–8 a.m.: . Then net ; the remaining takes 7 h → 3 p.m. (12:27 p.m. ignores C.)
Answer: B) 3 p.m.
Pipes A and B fill a tank in 10 and 12 hours, and pipe C empties it in 15 hours. A and B are opened on the empty tank at 7 a.m.; C is opened at 8 a.m. At what time is the tank full?
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