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A bag contains 18 red marbles. The ratio of red marbles to blue marbles is 6 to 9. Find the number of blue marbles in the bag.
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A bag contains 18 red marbles. The ratio of red marbles to blue marbles is 6 to 9. Find the number of blue marbles in the bag.

User Miqrc
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1 Answer

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The ratio tells us that every 6 red marbels there are 9 blue marbels. We have 6 * 3 red marbels, so we'll have 9 * 3 blue marbels, or 27 blue marbels
User Miesha
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