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a teacher 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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a teacher 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?

User Lang
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6 votes
Pretty sure it's 28.              
User MonsieurBeilto
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5 votes
She had 28 pens total because she had a ratio of 21 red pens to 7 blue pens. I got 7 by dividing 21 by 3.
User Mezod
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