question archive If Aaron gives 30% of his cards to Brandon, they will have the same number of cards

If Aaron gives 30% of his cards to Brandon, they will have the same number of cards

Subject:MathPrice: Bought3

If Aaron gives 30% of his cards to Brandon, they will have the same number of cards. If Aaron gives 475 cards to Brandon, then Aaron will have 5/7 as many cards as Brandon. How many cards does Brandon have? 

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