100 ft in 1 mile = 100 ft in 5280 ft = 1.8939% gradient
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for every 100 feet of road you travel, you rise 9 feet
[(100x60) + (Tx40)]/100=Average, where T is you average on the other 40% of your grade. Example: your grade average is 90 before the test. You get a 100 on the big test. [(100x60) + 90x40)]/100 = [6000 + 3600]/100 = 96
(85 percent + 79 percent + 92 percent + 100 percent)/4 = 89 percent
A mile is 5,280 feet, so 450 feet is 8.52% of a mile. (450/5280)/100 = 8.52%)
When determining the measurement of slope on a road, the equations are for grade (gradient). The formula is grade = (rise ÷ slope length) * 100