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Mathematics, 11.05.2021 14:00 avamcneil412

A11.) There are only black pens and green pens in a box. The ratio of the number of black pens in the box to the number of green pens in the box is 3:5
What fraction of the pens are black?

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A11.) There are only black pens and green pens in a box. The ratio of the number of black pens in t...
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