Mathematics, 04.11.2019 04:31, CrusaderLord

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? (just need work i have all answers just lost work this is due on fri.)

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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...