Racer A runs 15 miles an hour, and she needs to travel 5 miles to get to racer B and hand off her racing baton.  Racer B will then run 5 miles an hour faster than racer A, and travel 4 times as far.  That’s the whole race.  You now know that racer A takes 20 minutes, and that the equation for racer B is 20 times T = 60.  So how long does it take these two racers to complete the entire race?

(A) 23 minutes     (C) 1 hour and 20 minutes 
(B) 63 minutes     (D) 3 hours and 20 minutes