Question
Perry gave 111 of his erasers to Ian, 311 of his erasers to Zane and 211 of his erasers to Flynn. He then had 15 erasers left. How many erasers had he at first?
4 m

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Perry gave 111 of his erasers to Ian, 311 of his erasers to Zane and 211 of his erasers to Flynn. He then had 15 erasers left. How many erasers had he at first?