22 % grade:
go horizontally 100, go vertically 22, hypotonuse is slope.
angle is INV tan ( 22 / 100 ) = 12.407 degrees from horizontal
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Gradeability measurement unit is %
22 percent to 24 percent = 11:12 = 22% : 24% = 11 : 12
22 percent = 22/100 = 11/50
22 is what percent of 154= 22 / 154= 0.142857 or 14.29%
The difference between 41 percent and 22 percent = 60.3175%