Question
In a box, 64% of the pencils are red pencils and the rest are black and yellow pencils. The number of yellow pencils is thrice the number of black pencils. What percentage of the pencils in the box are black pencils?
2 m

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In a box, 64% of the pencils are red pencils and the rest are black and yellow pencils. The number of yellow pencils is thrice the number of black pencils. What percentage of the pencils in the box are black pencils?