Jackson's oldest son gets 4 cookies after school and his youngest son gets 2 cookies after school.  If there are 54 cookies in a box, how many days will the box last?
The oldest son gets 4 cookies and the youngest gets 2, so every day they eat 4+2 = <<4+2=6>>6 cookies
There are 54 cookies in a box and the boys eat 6 cookies a day, so the box will last 54/6 = <<54/6=9>>9 days
#### 9