The round trip is 12.5 miles * 2 way = 25 miles. In order to accomplish this in 45 minutes, or 45/60 = 0.75 hours, Tyrone would have to drive at a speed of 25 miles / 0.75 hours = 33.3 miles per hour. If he were to actually be able to drive continuously at this speed without stopping and the prescription pickup were instantaneous, then he would be able to make the round trip in time. However, in the real world this is unlikely to be the case.
