SHSAT Math Quiz
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RATIOS AND PROPORTIONAL REASONING
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The ratio of the number of red marbles to blue marbles in a bag is 2:3. The ratio of the number of blue marbles to green marbles is 4:5. After adding a certain number of green marbles, the new ratio of red to green marbles becomes 1:3. If the number of blue marbles remains unchanged, what is the ratio of the number of green marbles added to the initial total number of marbles in the bag?
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