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Mathematics, 26.08.2019 23:00 gabrielolivas59

Ateacher had 21 red pens. if the ratio of red pens to blue pens she owned was 3: 1, how many pens did she have total?

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Ateacher had 21 red pens. if the ratio of red pens to blue pens she owned was 3: 1, how many pens di...

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