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A boat moves at 12 km/h in still water and 19 km/h downstream. Find its speed against the stream.

Aptitude Boats and Streams Difficulty: Easy
Choose an option
  • A
    5 km/hr
  • B
    3 km/hr
  • C
    8 km/hr
  • D
    Data inadequate
  • E
    —

Answer

Correct Answer: 5 km/hr

Explanation

Solution:s = (down − still) = 19 − 12 = 7; upstream = b − s = 12 − 7 = 5 km/hr.

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