Question
Gwen, Shiyun and Emma collected some marbles. Gwen had thrice as many marbles as Shiyun, and Shiyun had 12 more marbles than Emma. If they had a total of 248 marbles, how many less marbles did Shiyun have than Gwen?
4 m

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Gwen, Shiyun and Emma collected some marbles. Gwen had thrice as many marbles as Shiyun, and Shiyun had 12 more marbles than Emma. If they had a total of 248 marbles, how many less marbles did Shiyun have than Gwen?