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OpenStudy (anonymous):
Sharmi ran 3 miles in eighteen minutes. How long would it take her to run 7 miles
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OpenStudy (kainui):
Let's think of an example where we might be able to figure it out, and see if that leads us to any insight. If you can run 3 miles in 10 minutes how long do you think it will take to run 6 miles?
OpenStudy (anonymous):
20 minutes
OpenStudy (kainui):
So how did you know that?
OpenStudy (anonymous):
Because I know 10 plus 10 equals 20 and if you wanted to run 6 miles you just added 3 again to it
OpenStudy (kainui):
Ok, so what if we extend this to running 9 or 12 miles? How about any number now? Can you try to find a pattern?
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