Mathematics, 30.12.2021 19:00 babyash12718
A boat whose speed is 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 is ___ km/hr. Type your answer below!
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A boat whose speed is 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 h...
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