Mathematics, 10.11.2020 21:00, jenn8055

A sled dog racer completed a race in 6 hours. Because of changes in the terrain, his average speed for the last 48 miles was twice as fast as his average speed for the first 12 miles. Which equation can be used to find r, his average speed in miles per hour, during the first 12 miles?

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A sled dog racer completed a race in 6 hours. Because of changes in the terrain, his average speed f...