a streamer goes downstream and covers difference btw two ports in 4 hrs while it covers the same distance upstream in 5 hrs. if speed of the stream is 2 km/hr. find the speed of streamer.
a streamer goes downstream and covers difference btw two ports in 4 hrs while it covers the same distance upstream in 5 hrs. if speed of the stream is 2 km/hr. find the speed of streamer.
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