Posted by **Stacey** on Monday, April 15, 2013 at 5:23pm.

The grade of a road or a railway road bed is the ratio rise/run, usually expressed as a percent. For example, a railway with a grade of 5% rises 5 ft for every 100 ft of horizontal distance.

1. The Johnstown, Pennsylvania, inclined railway was built as a "lifesaver" after the Johnstown flood of 1889. It has a 987-ft run at a 71% grade. How high does this railway lift its passengers?

2. The Fenelon Place Elevator railway in Dubuque, Iowa, lifts passengers 189 ft to the top of a bluff. It has an 83% grade. How long is this railway?

3. The Duquesne Incline Plane Company's roadway in Pittsburgh, Pennsylvania, climbs Mt. Washington, located above the mouth of the Monongahela River. It reaches a height of 400 ft with a 793-ft incline. What is its grade?

- Geometry -
**Isabel**, Friday, December 27, 2013 at 11:50pm
200%

## Answer this Question

## Related Questions

- math - the grade of a road is its slope given as a percent. for example, a road ...
- SLOPE MATH - The grade of a road is its slope given as a percent. for example, a...
- Math, Geometry - The percent grade of a highway is the amount that the highway ...
- Math - The percent grade of a highway is the amount that the highway raises or ...
- Geography - A railway was built from Burma to Thailand during WWII. What is the ...
- Math - A truck driver estimates that a country road rises 40 cm for every 6 m ...
- geometrey - The grade of a road is 7%. What angle does the road make with the ...
- Math - A truck driver estimates that a country road rises 40 cm for every 6 m ...
- physics - A locomotive that has a mass of 6.4 x 105 kg is used to pull 2 railway...
- geometry - A road climbs at an 8 degree angle with the horizontal. What is the ...

More Related Questions