The Community Center has exercise classes on Monday and Friday.

The Monday class is 1 3 hours and the Friday class is 1 1 hours.
4 2
Patrick attended both exercise classes last week and this week.

How many hours did Patrick spend in exercise classes last week and this week?

Last week, Patrick spent 1 hour on Monday and 1 hour on Friday in exercise classes.

This week, Patrick spent 3 hours on Monday and 1 hour on Friday in exercise classes.
In total, Patrick spent 1 + 1 + 3 + 1 = 6 hours in exercise classes last week and this week. Answer: \boxed{6}.

To calculate the total number of hours Patrick spent in exercise classes last week and this week, we need to add the durations of the Monday and Friday classes for both weeks.

Last week:
Monday class duration: 1 hour
Friday class duration: 1 hour

This week:
Monday class duration: 3 hours
Friday class duration: 1 hour

Adding up the durations:
1 hour (Monday last week) + 1 hour (Friday last week) + 3 hours (Monday this week) + 1 hour (Friday this week) = 6 hours

Therefore, Patrick spent a total of 6 hours in exercise classes last week and this week.

To find out how many hours Patrick spent in exercise classes last week and this week, we need to add up the hours of the Monday and Friday classes for both weeks.

Last week:
- Monday class: 1 hour
- Friday class: 1 hour

This week:
- Monday class: 3 hours
- Friday class: 1 hour

To calculate the total, we add up the hours for both weeks:
1 hour + 1 hour + 3 hours + 1 hour = 6 hours

Therefore, Patrick spent a total of 6 hours in exercise classes last week and this week.