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Mathematics 16 Online
OpenStudy (anonymous):

Jill walks 3 miles and her older sister walks 10 miles at a rate 2 mph faster than Jill. If the time for each girl's walk is added, the total is 3 hours, how fast does Jill’s sister walk (in miles per hour)? Use the following equation: 3 J + 10 J + 2 = 3

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