Beginning at 8:30 am, tours of the national capitol and the white house begin at a tour agency. Tours for the national Capitol leave every 15 minutes. tours for thee white house leave every 20 minutes how often do the tours leave at the same time

1 answer

To determine how often the tours leave at the same time, we need to find the least common multiple (LCM) of 15 minutes and 20 minutes.

The LCM of 15 and 20 is 60.

Therefore, the tours leave at the same time every 60 minutes.