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Riya worked out: "Downstream speed is 16 km/h and upstream speed is 10 km/h, so the stream speed is 16 − 10 = 6 km/h." What is the correct stream speed?

Competition practiceBoats & Streams
  • A6 km/h
  • B13 km/h
  • C2.6 km/h
  • D3 km/h

Step-by-Step Solution

The difference 16 − 10 = 6 equals TWICE the stream speed . So stream = km/h.
Answer: D) 3 km/h

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