Mathematics, 01.12.2020 18:00 asims44

There is a bag of marbles that has 40% blue marbles, 10% red marbles, 30% green marbles, and 20% black marbles. What is the ratio of red marbles to black marbles?

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There is a bag of marbles that has 40% blue marbles, 10% red marbles, 30% green marbles, and 20% bla...