Question
In a box, 70% of the pens are gold pens and the rest are red and grey pens. The number of grey pens is four times the number of red pens. What percentage of the pens in the box are red pens?
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In a box, 70% of the pens are gold pens and the rest are red and grey pens. The number of grey pens is four times the number of red pens. What percentage of the pens in the box are red pens?