Question
In a box, 58% of the notebooks are blue notebooks and the rest are black and red notebooks. The number of red notebooks is six times the number of black notebooks. What percentage of the notebooks in the box are black notebooks?
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In a box, 58% of the notebooks are blue notebooks and the rest are black and red notebooks. The number of red notebooks is six times the number of black notebooks. What percentage of the notebooks in the box are black notebooks?