Abhi7 wrote:Q. A train travels from New York City to Chicago, a distance of approximately 840 miles, at an average rate of 60 miles per hour and arrives in Chicago at 6:00 in the evening, Chicago time. At what time in the morning, New York City time, did the train depart for Chicago? (Note: Chicago time is one hour earlier than New York City time.)
(A) 4:00
(B) 5:00
(C) 6:00
(D) 7:00
(E) 8:00
Time for the trip = 840/60 = 14 hours.
We can plug in the answers, which represent the departure time.
Answer choice C: 6am.
6am + 14 hours = 8pm.
Since Chicago is one hour earlier, arrival time is 7pm.
Since the arrival time must be 6pm -- 1 hour earlier -- the departure time must be 6am - 1 = 5am.
The correct answer is
B.
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