## Paulo Cesar's asses

If we put 2 bags on each donkey, there are 13 bags left. That is, Being x the number of donkeys, the number of bags is 2x + 13.

If we put 3 bags on each donkey, there are 3 unoccupied donkeys. In this case, the number of bags would be 3x-9.

So just assemble the equation and find the number of donkeys, and then find the number of bags.

2x + 13 = 3x-9

13 + 9 = 3x-2x

x = 22 asses

If there are 22 asses, the number of bags is 2 (22) +13 = 57.

**Answer:** Paulo Cesar must carry **57 bags**.

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