Question
In a box, 50% of the files are pink files and the rest are black and green files. The number of green files is four times the number of black files. What percentage of the files in the box are black files?
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In a box, 50% of the files are pink files and the rest are black and green files. The number of green files is four times the number of black files. What percentage of the files in the box are black files?