Question
If Luis gives each of his friends 4 folders, he will have 29 left. If he gives each of them 9 folders, he will have 9 folders left. How many friends does Luis give folders to?
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If Luis gives each of his friends 4 folders, he will have 29 left. If he gives each of them 9 folders, he will have 9 folders left. How many friends does Luis give folders to?