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Solve the Problem 6mph6 \mathrm{mph} If a Boat Travels 70 Miles Downstream in the \mathrm{mph}

Question 17

Multiple Choice

Solve the problem.
-The speed of a stream is 6mph6 \mathrm{mph} . If a boat travels 70 miles downstream in the same time that it takes to travel 35 miles upstream, what is the speed of the boat in still water?


A) 20mph20 \mathrm{mph}
B) 21mph21 \mathrm{mph}
C) 12mph12 \mathrm{mph}
D) 18mph18 \mathrm{mph}

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