1. The hour hand is halfway between 10 and 11, so the time must be around 11:30.
2. The hour hand is halfway between 3 and 4, so the time must be somewhere around 3:30.
3. The hour hand is halfway between 1 and 2, so the time must be around 1:30.
Any time the hour hand is halfway between two numbers, it will be the smaller of the two numbers that it is between and 30 minutes.
4. The hour hand is halfway between 6 and 7, so the time is 6:30 (half past 6). At this time, from the information given to us, we know that Greg eats his dinner, so we can assume that that is what Greg is doing now.
Greg is eating dinner.
Hope that helped! =)
