SOLUTION: On a visit to the Grand Canyon, a tourist took an excursion and went one-third of the way on foot, 10 miles by boat, and one-sixth of the way by mule. How long was the excursion?

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Question 29306: On a visit to the Grand Canyon, a tourist took an excursion and went one-third of the way on foot, 10 miles by boat, and one-sixth of the way by mule. How long was the excursion?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
X/3+10+X/6=X OR X/3+X/6-X=-10 OR 2X/6+X/6-X=-10 OR 3X/6-X=-10 OR
X/2-X=-10 OR -X/2=-10 OR -X=-20 OR X=20
PROOF 20/3+10+20/6=20 OR 40/6+60/6+20/6=20 OR (40+60+20)/6=20 OR 120/20=20
OR 20=20