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04-10-2016
Mathematics

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Which is steeper: the boat ramp or a road with a 12% grade? Explain. (Note: Road grade is the vertical increase divided by the horizontal distance)

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HomertheGenius HomertheGenius

12-10-2016

Slope = Rise / Run
Road grade is vertical increase ( Rise ) divided by the horizontal increase ( Run ).
The boat ramp:
Road Grade (B) = 6 ft / 36 ft = 1/6 = 0.167
The road:
Road Grade (R) = 12 % = 0.12
0.167 > 0.12
Answer: The boat ramp is steeper.

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