1. The problem statement, all variables and given/known data Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 65 mi/h. (a) Assuming that they start at the same point, how much sooner does the faster car arrive at a destination 10 mi away? ______ min (b) How far must the faster car travel before it has a 15-min lead on the slower car? ______ mi 2. Relevant equations I'm not sure how to set up an equation. 3. The attempt at a solution I divided 10 mi by each speed, then multiplied each result by 60 and compared minutes.