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Mathematics, 23.04.2021 17:00 SeleneBlackburn25

ack had quite a few hockey cards, and Jill had some of her own. Jack gave Jill as many hockey cards as she already had. Jill then gave Jack back as many cards as he had left. Finally, Jack gave her back as many cards as she had left. This left poor Jack with no cards and left Jill with 40 cards altogether. How many hockey cards did each of them have just before these exchanges took place

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ack had quite a few hockey cards, and Jill had some of her own. Jack gave Jill as many hockey cards...

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