Report - Malaysia International Mathematics Olympiad Competition 2017 · 2018-03-15 · 9 years later. What is the age of Mary as of 2017? 玛丽的年龄比汤姆年龄的4倍少3，玛丽3年后的年龄等于汤姆9年后的年龄。问：玛丽2017年

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