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Ghats A, B and C lie in that order down a river, with AB = 24 km and BC = 36 km. A ferry (15 km/h in still water) runs from A to C on a 3 km/h current and halts 15 minutes at B. How long does the run take?

Competition practiceBoats & Streams
  • A3 h 35 min
  • B3 h 20 min
  • C4 h 15 min
  • D4 h 35 min

Step-by-Step Solution

All of it is downstream at 18 km/h: 60 ÷ 18 = 3 h 20 min. Add the 15-minute halt: 3 h 35 min.
Answer: A) 3 h 35 min

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