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A houseboat in the Kerala backwaters has a still-water speed of 30 km/h. It goes 40 km downstream and returns, taking 3 hours in all. What is the speed of the current?

Competition practiceBoats & Streams
  • A5 km/h
  • B15 km/h
  • C8 km/h
  • D10 km/h

Step-by-Step Solution

. With ✓ gives about 2.74 h.)
Answer: D) 10 km/h

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