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? Think carefully first, then make a decision:
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The oldest son gets 4 cookies and the youngest gets 2, so every day they eat 4 + 2 = 6 cookies. There are 54 cookies in a box and the boys eat 6 cookies a day, so the box will last 54 / 6 = 9 days. So, the answer is 9.
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