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A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total

Answers (1)
R rishi raj

A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:

  • Option 1)

    4

  • Option 2)

    5

  • Option 3)

    6

  • Option 4)

    7

  • Option 5)

    10

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