Question
Dana had thrice as many pens as cards at first. She removed 6 pens and 3 cards each time. In the end, there were 12 pens and 1 card left. How many pens and cards did Dana have at first?
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Dana had thrice as many pens as cards at first. She removed 6 pens and 3 cards each time. In the end, there were 12 pens and 1 card left. How many pens and cards did Dana have at first?