Karen places a bet with Tom that she will beat Tom in a car race by 4 miles even if Karen starts 4 minutes late. Assuming that Karen drives at an average speed of 60 mph and Tom drives at an average speed of 45 mph, how many Q miles will Tom drive before Karen wins the bet?  Choose the correct choice from the following choices
A) 15	B) 18	C) 21	D) 24	E) 27
Let K and T be the speeds of Karen and Tom respectively.   t be the time that Karen will travel ----&gt; t+4/60 will be the total time Tom will travel by the time the distance between Karen and Tom is 4 miles.   Thus, per the question , K(t) - T(t+4/60) = 4 ---&gt; t = 7/15 hours   Thus the distance traveled by Tom when Karen is 4 miles ahead of him : T*(t+4/60) = 45 (7/15+4/60) Q= 24 miles. 24 is the correct answer.
<result>D</result>
Karen places a bet with Tom that she will beat Tom in a car race by 4 miles even if Karen starts 4 minutes late. Assuming that Karen drives at an average speed of 60 mph and Tom drives at an average speed of 45 mph, how many Q miles will Tom drive before Karen wins the bet?