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The Speed of a Stream Is 4 Mph

Question 208

Multiple Choice

The speed of a stream is 4 mph. If a boat travels 90 miles downstream in the same time that it takes to travel 45 miles upstream, what is the speed of the boat in still water?


A) 14 mph
B) 8 mph
C) 12 mph
D) 15 mph

Correct Answer:

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