Question 1113691
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Let L be the unknown distance (in yards).

Then the "time" equation is


{{{L/3}}} = {{{(L-35)/2.5}}} - 2.


Left side is Alan's time.  Right side is the Bill's time minus 2 seconds.


Multiply both sides by 7.5. You will get


2.5L = 3*(L-35) - 15


2.5L = 3L - 105 - 15


2.5L = 3L - 120


120 = 3L - 2.5L 


120 = 0.5L  ====>  L = {{{120/0.5}}} = 240.


<U>Answer</U>.  The distance is 240 yards.
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Solved.