Question
Oliver had 10% as many pens as Nick. After Oliver and Nick bought another 33 pens and 30 pens respectively, Oliver had 60% less pens than Nick. How many pens did Nick have at first?
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Oliver had 10% as many pens as Nick. After Oliver and Nick bought another 33 pens and 30 pens respectively, Oliver had 60% less pens than Nick. How many pens did Nick have at first?