To get to the end of the trail it would take 2 hours because the walking back hours would be double the walking out rate, but it would still have to equal 6 hours. So walking out would be 2 hours and walking back would be 4 hours which makes the trail 8 miles long.
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It would be a 90%. In the calculator 18 is what percent of 20.
C. Area of rectangle is A=L X W
If the length is 5 times bigger and the width is 5 times bigger, than the area is 25 times bigger