Question
Shiyun, Irene and Xandra collected some balls. Shiyun had thrice as many balls as Irene, and Irene had 12 more balls than Xandra. If they had a total of 128 balls, how many less balls did Irene have than Shiyun?
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Shiyun, Irene and Xandra collected some balls. Shiyun had thrice as many balls as Irene, and Irene had 12 more balls than Xandra. If they had a total of 128 balls, how many less balls did Irene have than Shiyun?