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Mathematics, 17.11.2020 22:30 strodersage

1 A bag contains 100 marbles. Some are red and the rest are black. There
are 3 red marbles for every 1 black marble. How many red marbles are in
the bag?

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1 A bag contains 100 marbles. Some are red and the rest are black. There
are 3 red marbles fo...
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