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A motor boat has speed 30 km/h in still water. It goes 60 km down stream and comes back in 9/2 h. What is the speed of the stream?
  • a)
    5 km/h
  • b)
    8 km/h
  • c)
    10 km/h
  • d)
    12 km/h
  • e)
    None of the above/More than one of the above
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A motor boat has speed30km/hin still water. It goes60kmdown stream and...
Let speed of the stream = y km/h
ATQ,

By option (c)
Speed of stream  y=10 km/h

verified option (c) 10 km/h
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Community Answer
A motor boat has speed30km/hin still water. It goes60kmdown stream and...
Let speed of the stream = y km/h
ATQ,

By option (c)
Speed of stream  y=10 km/h

verified option (c) 10 km/h
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A motor boat has speed30km/hin still water. It goes60kmdown stream and comes back in9/2h. What is the speed of the stream?a)5 km/hb)8 km/hc)10 km/hd)12 km/he)None of the above/More than one of the aboveCorrect answer is option 'C'. Can you explain this answer?
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