Question

David's school day is 714 hours long. He has six classes each of which is 34 hour long. How many hours is David not in class when he is at school?

Answer 1

Explanation:

David's school day is 7-14 hours long with six classes, each of which is 3-4 hours long. In total, David spends 204 hours in class each school day. Therefore, he is not in class for 510 hours while he is at school.