A train travels from New York to Chicago, a distance of approximately 840 miles, at an average rate of 60 miles per hour and arrives in Chicago at 7:00 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) Pick one
A) 3:00	B) 4:00	C) 5:00	D) 6:00	E) 7:00
7:00 in evening in Chicago = 8:00 in evening in New York. So, the train was in Chicago 8:00 in the evening, New York time.   The trip took T=D/R=840/60= 
<gadget id="calculator">840/60</gadget>
<output>14</output>
14 hours. Therefore, the train depart from New York at 8:00 - 14 hours= 6:00 in the morning, New York time.   Answer: 6:00.
<result>D</result>
A train travels from New York to Chicago, a distance of approximately 840 miles, at an average rate of 60 miles per hour and arrives in Chicago at 7:00 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)