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Mathematics, 16.12.2019 23:31 rainbowdashgirl68

Of all the students in a certain dormitory, 1 2 are first-year students and the rest are second-year students. if 4 5 of the first-year students have not declared a major and if the fraction of second-year students who have declared a major is 3 times the fraction of first-year students who have declared a major, what fraction of all the students in the dormitory are second-year students who have not declared a major?
a. 1/15b. 1/5c. 4/15d. 1/3e. 2/5

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Of all the students in a certain dormitory, 1 2 are first-year students and the rest are second-year...
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