Question
In a box, 40% of the pens are pink pens and the rest are black and yellow pens. The number of yellow pens is five times the number of black pens. What percentage of the pens in the box are black pens?
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In a box, 40% of the pens are pink pens and the rest are black and yellow pens. The number of yellow pens is five times the number of black pens. What percentage of the pens in the box are black pens?