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Mathematics 22 Online
OpenStudy (anonymous):

7th Grade Math Help Please Today, Dan walked 20 minutes at a rate of 3 mph, and he ran 15 minutes at a rate of 6 mph. 1. How many miles did Dan walk and run? Tomorrow, Dan wants to travel a total of 4 miles by walking and running. He plans to run for 20 min at a rate of 6 mph. 2. How many min should he walk at a rate of 3 mph to finish traveling the 4 miles?

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