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MATH / A railroad trestle spans a gorge 80 feet wide and connects two cliffs at heights…

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problem

A railroad trestle spans a gorge 80 feet wide and connects two cliffs at heights of 112 and 172 feet above the bottom of the gorge. A train is crossing this gorge from the higher cliff to the lower. When the front of the train has traveled 34\frac{3}{4} of the trestle's length, how many feet is it above the bottom of the gorge?
Plain-text mathematical notation (without MathML)
A railroad trestle spans a gorge 80 feet wide and connects two cliffs at heights of 112 and 172 feet above the bottom of the gorge. A train is crossing this gorge from the higher cliff to the lower. When the front of the train has traveled (3)/(4) of the trestle's length, how many feet is it above the bottom of the gorge?
Original LaTeX notation
A railroad trestle spans a gorge 80 feet wide and connects two cliffs at heights of 112 and 172 feet above the bottom of the gorge. A train is crossing this gorge from the higher cliff to the lower. When the front of the train has traveled $\frac{3}{4}$ of the trestle's length, how many feet is it above the bottom of the gorge?

level

Level 4

type

Prealgebra

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