Respuesta :

I have know idea how to slice this
Find the lowest comment multiple (LCM) of 12 and 15.
If you have a scientific calculator you can just press LCM then do (12,15)
If not then list out the addition and find a similar number.
12, 24, 36, 48, 60
15, 30, 45, 60
It will take them 1 minute.