Question

beginning on.the first day of school ,mr. jones,gives his,son a,turkey sandwich for lunch every 6 days,and a banana with his lunch every 4 days. in how many days will mr. jones again give his son both a turkey sandwich and a banana for lunch?

Answer 1

turkey sandwich on day:
1 7 <b>13</b> 19 25 31 ...
banana on day:
1 5 9 <b>13</b> 17 21 ...

mhhh ?

Answer 2

13