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Mathematics, 11.12.2019 20:31 deena7

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

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