Some words are who and how.
6:15pm - 30 minutes=
5:45pm
5:45pm - 20 minutes=
5:25pm
5:25pm - 35 minutes=
4:50pm
4:50pm - 10 minutes=
4:40pm
4:40pm - 30 minutes=
4:10pm
The latest time he should start packing for his trip is at 4:10pm
The answer is c. The number of different times zones in the United States
