Question
Lee had 5 more grey marbles than brown marbles at first. His mother then gave him 17 grey marbles and his colleagues gave him 90 brown marbles for Christmas. Lee realised that he now had thrice as many brown marbles as grey marbles. How many marbles did Lee have in the end?
4 m

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Lee had 5 more grey marbles than brown marbles at first. His mother then gave him 17 grey marbles and his colleagues gave him 90 brown marbles for Christmas. Lee realised that he now had thrice as many brown marbles as grey marbles. How many marbles did Lee have in the end?