Question
Bryan had 10% as many pens as Vaidev. After Bryan and Vaidev bought another 28 pens and 10 pens respectively, Bryan had 60% less pens than Vaidev. How many pens did Vaidev have at first?
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Bryan had 10% as many pens as Vaidev. After Bryan and Vaidev bought another 28 pens and 10 pens respectively, Bryan had 60% less pens than Vaidev. How many pens did Vaidev have at first?