Question

The museum has tours every 20

minutes and a video to watch
every 15 minutes. Both the video
and tour start at 10:00 a.m. What
is the next time they will both be
starting at the same time?
​

Answer 1

it is at 11:00 because if you add

20

`20 +20 + 20 = 60and15 + 15 + 15 + 15 = 60`

you will get 11:00