<PRE><B>Question 439988</B>
Finding the Grade of a Mountain Trail. A straight trail with a uniform inclination leads from a hotel, elevation 5000 feet, to a lake in a valley, elevation 400 feet. The length of the trail is 4100 feet. What is the inclination (grade) of the trail? 
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grade = rise/run
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grade = (5000-400)/4100
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grade = 4600/4100
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grade = 46/41 = 1.122
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Cheers,
Stan H.</PRE>