Question
Alfie has 70 cards.
He puts the cards into some groups.
There are 7 grey cards and 3 black cards in each group.
How many groups of cards does Alfie have?
4 m

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Alfie has 70 cards.
He puts the cards into some groups.
There are 7 grey cards and 3 black cards in each group.
How many groups of cards does Alfie have?