Question
Oliver had 7 more brown erasers than silver erasers at first. His father then gave him 20 brown erasers and his colleagues gave him 207 silver erasers for Christmas. Oliver realised that he now had five times as many silver erasers as brown erasers. How many erasers did Oliver have in the end?
4 m

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Oliver had 7 more brown erasers than silver erasers at first. His father then gave him 20 brown erasers and his colleagues gave him 207 silver erasers for Christmas. Oliver realised that he now had five times as many silver erasers as brown erasers. How many erasers did Oliver have in the end?