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Boats and Streams

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  1. A person rows a kilometre down the stream in 10 minute and upstream in 30 minutes. Find the velocity of the stream ?
    1. 1 km/hr
    2. 2 km/hr
    3. 3 km/hr
    4. 4 km/hr
Correct Option: B

Velocity of stream = (downstream velocity - upstream velocity)/2
= (60/10 - 60/30)/2
= 2 km/hr


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