a streamer goes downstream and covers the distance between two ports in 4 hours and covers the same distance upstream in 5 hours find the speed of the streamer if the water is flowing at the speed of 1.5 kmph
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a streamer goes downstream and covers the distance between two ports in 4 hours and covers the same distance upstream in 5 hours find the speed of the streamer if the water is flowing at the speed of 1.5 kmph.
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