- A3 p.m.
- B2:30 p.m.
- C1:30 p.m.
- D3:30 p.m.
Step-by-Step Solution
A to B (downstream): 36 ÷ 12 = 3 h. Halt: 0.5 h. B to A (upstream): 36 ÷ 8 = 4.5 h. Total 8 h after 7 a.m. = 3 p.m.
Answer: A) 3 p.m.
In the figure, the boat leaves A at 7 a.m., reaches B, waits there for 30 minutes, then returns to A. At what time does it get back to A?
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