Question
Abel has 100 marbles.
He puts the marbles into some groups.
There are 5 black marbles and 5 red marbles in each group.
How many groups of marbles does Abel have?
4 m

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Abel has 100 marbles.
He puts the marbles into some groups.
There are 5 black marbles and 5 red marbles in each group.
How many groups of marbles does Abel have?