Mathematics, 15.06.2020 18:57 DeathFightervx
28. A speed of a boat in still water is 11 km/hr. It can go 12 km upstream and return downstream to the original point in 2 hr 45 minutes. Find the speed of the stream,
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28. A speed of a boat in still water is 11 km/hr. It can go 12 km upstream and return downstream to...
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