Question
Shiyun had a total of 244 red and purple marbles. She used 37 of her red marbles and bought another 31 purple marbles. The number of purple marbles she had then become 13 the number of red marbles. How many less purple marbles than red marbles did she have at first?
4 m

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Shiyun had a total of 244 red and purple marbles. She used 37 of her red marbles and bought another 31 purple marbles. The number of purple marbles she had then become 13 the number of red marbles. How many less purple marbles than red marbles did she have at first?