SOLUTION: The percent grade of a highway is the amount that the highway rises (or falls) in a given horizontal distance. For example, a highway with a four percent grade rises 0.04 mile for

Question 938003: The percent grade of a highway is the amount that the highway rises (or falls) in a given horizontal distance. For example, a highway with a four percent grade rises 0.04 mile for every 1 mile of horizontal distance.
A. How many feet does a highway with a six percent grade rise in 2.5 miles of horizontal distance?
B. How many feet would a highway with a six percent grade rise in 90 miles of horizontal distance if the grade remained constant?
C. How is percent grade related to slope?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
5280ft = 1mi
A. | Cross Multiply to solve x = .1mi 0r 528ft
B. = 5.4mi 0r 28,512ft
C. 100 times slope
for ex: = 4%
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