Slope Ratio

Suppose that a highway rises a distance of 215 feet in a horizontal distance of 2640 feet. Express the grade of the highway to the nearest tenth of a percent.

Comments for Slope Ratio

Average Rating starstarstarstarstar

Click here to add your own comments

Nov 09, 2010
by: Anonymous


Aug 16, 2010
Slope Ratio
by: Karin

For this problem, we must remember that slope is:

Therefore the ratio is:

Now we must divide in order to change this ratio (fraction) to a decimal. Then we can change a decimal to a percent.

215/2640 = .0814

Now to change the decimal to a percent, you must multiply the decimal by 100 or move the decimal point two places to the right.

.0814 * 100 = 8.14

Therefore, the grade of the hill is 8.1%.

I hope this helps,

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Students.

Need More Help With Your Algebra Studies?

Get access to hundreds of video examples and practice problems with your subscription! 

Click here for more information on our affordable subscription options.

Not ready to subscribe?  Register for our FREE Pre-Algebra Refresher course.