| If the total distance is only 10 miles, multiply 10 by 2/3 (or 10/1 x 2/3= 20/3). The mountain trail would then be 6.666666....( into infinity, because 20 cannot be divided evenly by 3) miles long. If 10 miles represents the 2/3, the answer is 15 miles total (15 x 2/3 =15/1 x 2/3= 30/3=10).
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