A mountain peak rises 4504 ft from sea level over a horizontal distance of 15,855 ft. Find the grade of the peak.
Solution:-
To find the grade of the peak, find the slope of the peak and express it as a percent.
Recall that to find the slope, m, divide the change in y by the change in x.
In other words, m = 
. Now apply the definition of slope.
m = 
(rounded to hundredths)
Now, express the slope as a percent. To convert 0.28 to a percent, multiply 0.28 by 100 and attach a percent sign.
= 28%
The grade of the peak is 28%.