## anonymous 4 years ago myininaya? The slope of a railway is expressed as a percent and is called the grade of the road. At the Royal Gorge, in Colorado, an inclined railway takes visitors down to the arkansas river. If the grade is 175% and the vertical drop of the railway is 1015 feet, what is the horizontal change of the railway?

1. myininaya

ok so slope is rise/run $1.75=\frac{rise}{run}=\frac{1015}{run}$

2. myininaya

We need to solve $1.75=\frac{1015}{run}$ for run

3. myininaya

run is the horizontal change

4. anonymous

okay and then?

5. anonymous

is that all??

6. myininaya

$1.75 run=1015$

7. myininaya

yes just divide both sides by 1.75

8. anonymous

and that's the answer??

9. myininaya

whatever 1015/1.75 is yes

10. anonymous

105?

11. anonymous

that is the horizontal change?

12. myininaya

yes

13. myininaya

i get 580

14. myininaya

1015/1.75 is what i did

15. anonymous

ohh careless mistake. Thank you!~