Mathematics, 25.11.2019 20:31 liz77717

Every student enrolled in a science course is either a physics major or a biology major. if the ratio of physics majors to biology majors is 3 to 1 and there are 21 physics majors enrolled, how many biology majors are enrolled in the course?

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Every student enrolled in a science course is either a physics major or a biology major. if the rati...

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