Question
Cathy had four times as many pens as Xuan. After Xuan bought another 98 pens, Xuan had 2 times as many pens as Cathy. How many pens did Cathy have?
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Cathy had four times as many pens as Xuan. After Xuan bought another 98 pens, Xuan had 2 times as many pens as Cathy. How many pens did Cathy have?