A motorboat spends $1$ hour and $50$ minutes sailing downstream the river for $20$ km and sailed back upstream the river.Next time it spends $54$ minutes sailing $12$ km downstream the river and 8 km upstream the river.Calculate the speed of the boat in still water and the speed of the current of the river.
2026-03-28 09:57:14.1774691834
Calculate the speed of the boat in still water?
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