Question
Nicole and Penelope have some pens. If Nicole gives 11 pens to Penelope, Penelope will have 4 times the number of pens as Nicole. If Penelope gives 15 pens to Nicole, Nicole will have 12 as many pens as Penelope. How many pens does Nicole have at first?
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Nicole and Penelope have some pens. If Nicole gives 11 pens to Penelope, Penelope will have 4 times the number of pens as Nicole. If Penelope gives 15 pens to Nicole, Nicole will have 12 as many pens as Penelope. How many pens does Nicole have at first?