Question 879364
The 840 foot climb is part of a triangle with hypotenuse 1 mile.  Try to do everything in feet, because the question asks for feet.  A proportion will work.


1 mile = 5280 feet.


{{{840/5280=y/(7&3/4(5280))}}}, ratios of the climb to the road distance.

The conversion factor is not really needed.


{{{840/1=y/7&3/4}}}, easier, because now this relates climb in feet to road distance in miles.
{{{highlight(y=840(7&3/4))}}} feet.