Question 1009161

Convert 2% to 2/100 then set up your equation:


{{{2/100 = y/5280}}}


Before solving for y, you may choose to reduce accordingly:


{{{1/50 = y/5280}}}


By cross multiplication, {{{50y = 5280}}} 


Divide both sides by 50 to obtain a value for y, 


{{{50y/50 = 5280/50}}} --> {{{y = 528/5}}} or 105.6.


The highway rises 105.6 ft in a horizontal distance of one mile.


Verify: 

{{{2/100 = y/5280}}} where y = 105.6


{{{2/100 = 105.6/5280}}}


{{{2/100 = 1/50}}} which is also 2% is true.