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The speed of a boat in stll water is 10 km/hr. If its speed downstream be 13 km/hr, then speed of the stream is:

The speed of a boat in stll water is 10 km/hr. If its speed downstream be 13 km/hr, then speed of the stream is:

  • Option 1)

    1.5 kmph

  • Option 2)

    3 kmph

  • Option 3)

    5 kmph

  • Option 4)

    7.5 kmph

  • Option 5)

    8.5 kmph

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