Joe began work at 7:00 a. m He took off an hour to go home for lunch He didnt finish his work until 9:00 p. m how many hours did joe work

I'm going to change all of the hours to 24-hour time to make calculating easier.

7:00 am is still 7:00

9:00 pm is 9+12=21:00

In between 7:00 and 21:00, there are 21-7=14 hours.

Now, since he took off an hour for lunch, we get 14-1=13 hours.

Joe worked for 13 hours.

Good luck!