2. 12:00
A family with 2 adults and 2 kids come. They will take up 4
seats. They will leave at 12:30.
A family with 1 adult and 3 kids come. They will take up 4
seats. They will leave at 12:45.
A group of teenagers arrive next. They will take up 5 seats.
They will leave at 12:45.
They will all leave at 12:45. Altogether they take up 13
spaces, leaving 11 seats spare.
3. 12:10
A family with 2 adult and 2 kids come. They
take up 4 seats. They will finish eating at
12:40.