A train travels from New York to Chicago, a distance of approximately 480 miles, at an average rate of 60 miles per hour and arrives in Chicago at 5:00 in evening, Chicago time. At what hour in the morning, New York time, did the train depart for Chicago? (Note : Chicago time is one hour earlier than New York time)
Select:
A) 10:00  B) 4:00  C) 5:00  D) 6:00  E) 7:00
5:00 in evening in Chicago = 6:00 in evening in New York. So, the train was in Chicago 6:00 in the evening, New York time.   The trip took T=D/R=480/60= 
<gadget id="calculator">480/60</gadget>
<output>8</output>
8 hours. Therefore, the train depart from New York at 6:00 - 8 hours= 10:00 in the morning, New York time.   10:00nswer: 10:00.
<result>A</result>
A train travels from New York to Chicago, a distance of approximately 480 miles, at an average rate of 60 miles per hour and arrives in Chicago at 5:00 in evening, Chicago time. At what hour in the morning, New York time, did the train depart for Chicago? (Note : Chicago time is one hour earlier than New York time)