Question
Ian had 25% as many erasers as Billy. After Ian and Billy bought another 12 erasers and 8 erasers respectively, Ian had 50% less erasers than Billy. How many erasers did Billy have at first?
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Ian had 25% as many erasers as Billy. After Ian and Billy bought another 12 erasers and 8 erasers respectively, Ian had 50% less erasers than Billy. How many erasers did Billy have at first?