Question
In a box, 60% of the markers are green markers and the rest are black and grey markers. The number of grey markers is thrice the number of black markers. What percentage of the markers in the box are black markers?
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In a box, 60% of the markers are green markers and the rest are black and grey markers. The number of grey markers is thrice the number of black markers. What percentage of the markers in the box are black markers?