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The boat in the figure goes from A to B, halts at B for 1 hour, and returns to A. What is the total time from leaving A to getting back?

Competition practiceBoats & Streams
  • A11 hours
  • B10 hours
  • C12 hours
  • D9.6 hours

Step-by-Step Solution

A→B downstream at 24 km/h: 4 h. B→A upstream at 16 km/h: 6 h. Plus 1 h halt: 11 h. (Forgetting the halt gives 10 h.)
Answer: A) 11 hours

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