SAT - Math - Speed Time Distance
When it is noon EST in New York City, it is 9 am PST in San Francisco.
When it is noon EST in New York City, it is 9 am PST in San Francisco. A plane took off from NYC at noon EST and arrived in San Francisco at 4 pm PST on the same day. If as second plane left San Francisco at noon PST and took exactly the same amount of time for the trip, what was the plane's arrival time (EST) in NYC?
(a) 10:00 PM EST
(b) 9:00 PM EST
(c) 7:00 PM EST
(d) 6:00 PM EST
(e) 4:00 PM EST
Given 12 noon in ET is 9am in PST
ET = PST + 3 hours
TIme at which plane took off = 12 noon ET = 9 am PST
Time at which plane arrived = 4pm PST
total time taken = 7 hours
Time at which plane took off = 12 noon PST = 3 PM ET
Time taken by plane = 7 hours
Time at which plane landed = 3PM + 7 hours = 10PM ET