Question

al calls every 3 days, lee every 4 days, and pat every 6 day. Once every ? days, all three will call on the same day

Answer 1

12

Explanation:

Find the LCM (Least Common Multiple) of the three numbers.

We could multiply 3 x 4 x 6 to get 72, but there is a smaller multiple, 12.

6 x 2 = 12

4 x 3 = 12

3 x 4 = 12

Hope this helps!