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Louisa ran at an average speed of five miles per hour along an entire circular park path. Calvin ran along the same path in the opposite direction at an average speed of six miles per hour. It took Calvin 30 minutes less than it took Louisa to run the full path once. How many miles did Louisa run when she completed one circular path?

 May 30, 2020
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икс,деленное на пять минус икс,деленное на шесть=0,5 часов . От сюда следует,что икс=15миль.

 May 30, 2020

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