A bag contains 7 red marbles and 5 black marbles. You want to add 60 marbles to the bag, but the ratio of red to black marbles must remain the same. How many of each color should you add?
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Home » Mathematics » A bag contains 7 red marbles and 5 black marbles. You want to add 60 marbles to the bag, but the ratio of red to black marbles must remain the same. How many of each color should you add?