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The current flows at 2 km/h. A boat takes 1 hour longer to go 15 km upstream than to go 15 km downstream. What is its speed in still water?

Competition practiceBoats & Streams
  • A8 km/h
  • B7 km/h
  • C10 km/h
  • D6 km/h

Step-by-Step Solution

⇒ ⇒ ⇒ km/h. Check: 2.5 h − 1.5 h = 1 h ✓.
Answer: A) 8 km/h

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