Question
Pierre had 10 more grey stamps than green stamps at first. His father then gave him 11 grey stamps and his brothers gave him 132 green stamps for Christmas. Pierre realised that he now had four times as many green stamps as grey stamps. How many stamps did Pierre have in the end?
4 m

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Pierre had 10 more grey stamps than green stamps at first. His father then gave him 11 grey stamps and his brothers gave him 132 green stamps for Christmas. Pierre realised that he now had four times as many green stamps as grey stamps. How many stamps did Pierre have in the end?