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A boat traveled 189 miles downstream and back. The downstream trip took 7 hours. The trip back took 21 hours. Find the speed of the boat in still water and the current.



Answer :

Esthermanu8
 7hrs/ =x
21hrs 189
1323=7x
7       7
189=x
the speed of the boat in still water is 189
i got the answer by setting a proportion.
hope it work

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