Problem 1293
You have a jar that contains blue and red marbles. The jar has more blue than red marbles.
You add red marbles until one-third of the marbles in the jar are blue;
Then you add yellow marbles until one-fifth of the marbles in the jar are blue;
Then you double the number of blue marbles in the jar;
What fraction (in decimal form) of the marbles in the jar will be blue?
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