Question
Paul gave 311 of his marbles to George, 311 of his marbles to Zeph and 311 of his marbles to Zane. He then had 18 marbles left. How many marbles had he at first?
4 m

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Paul gave 311 of his marbles to George, 311 of his marbles to Zeph and 311 of his marbles to Zane. He then had 18 marbles left. How many marbles had he at first?