Math

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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 -

    I am assuming it is a plane that left at 7:00.

    (7:00)-(1.5 hrs check-in)-(1hr drive from house)=4:30

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