Math
posted by Thad .
Wong's left at 7:00. It took him one and a half hours to check in at the airport. His house is an hour drive from the airport. At what time did Wong leave his house to get to the airport?

Math 
Lee
I am assuming it is a plane that left at 7:00.
(7:00)(1.5 hrs checkin)(1hr drive from house)=4:30
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