Mathematics, 06.11.2020 21:10, shadowsnake

10. A motorboat can go 8 miles downstream on a river in 20 minutes. It takes 30 minutes for this boat to go back upstream the same 8 miles. Find the speed of the boat in still water.

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10. A motorboat can go 8 miles downstream on a river in 20 minutes. It takes 30 minutes for this boa...