Posted by **Mike** on Tuesday, March 11, 2008 at 3:43pm.

13. A boat cruises downstream for 2 hours before heading back. It takes 3.5 hours going upstream to get back. If the speed of the stream is 8 mph, what is the speed of the boat in still water?:

a. 14.7 mph

b. 19.6 mph

c. 24.8 mph

d. 29.3 mph

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