Mr. Earl leaves home every day at 8:00 AM to go to work. If he drives at an average speed of 40 miles per hour, he will be late by 3 minutes. If he drives at an average speed of 60 miles per hour, he will be early by 3 minutes. How many miles per hour does Mr.Earl need to drive to get to work exactly on time ?
(A) 45 (B) 48 (C) 50 (D) 55 (E) 58
ANSWER: B