SOLUTION: Jason is driving a boat against the 5 mph current for 3 hours. then, he drives back, which takes 1.5 hours. how fast would he travel in still water?

Question 721688: Jason is driving a boat against the 5 mph current for 3 hours. then, he drives back, which takes 1.5 hours. how fast would he travel in still water?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the speed of the boat in still water in mi/hr
= his speed going with the current in mi/hr
= his speed going against the current in mi/hr
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Against the current:

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By substitution:

He would travel 15 mi/hr in still water
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