Celia runs twice as fast as Lexie. If it takes Lexie 20 minutes to run a mile, how long, in minutes, will it take Celia to 30 miles? Let's be accurate as possible.
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If Lexie takes 20 minutes to run a mile, Celia takes 20 / 2 = 10 minutes to run the same distance since she is twice as fast. Celia takes 10 minutes to run one mile so it will take 10 * 30 = 300 minutes to run 30 miles.
The answer: 300.
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