For the faster cyclist, their rate is 20mi/hr
The second one is 10mi/hr
The answer would have to be 1.
Okay from what I know that equation would basically be over one, on L'hopital's rule you take the derivative of the numerator and denominator to find the limit, if you take the derivative of 1 then you get 0 and the limit couldnt exist, so in this problem the limit does not exist :) <span />