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Fractions and Proportions
Sarah has a bag of marbles containing 30% red marbles and 70% blue marbles. If she adds 20 more red marbles to the bag, what will be the new proportion of red marbles to blue marbles in the bag? Show your work.
Sarah has a bag of marbles containing 30% red marbles and 70% blue marbles. If she adds 20 more red marbles to the bag, what will be the new proportion of red marbles to blue marbles in the bag? Show your work.
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