Question
Peter had 80 cards. He packed them into packets of 4 or 6. There were 5 more packets of 4 than packets of 6. How many packets of cards were there in the end?
4 m

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Peter had 80 cards. He packed them into packets of 4 or 6. There were 5 more packets of 4 than packets of 6. How many packets of cards were there in the end?