Happy marriage
Jan and Mary have been in a happy marriage for several years. Jan's age is written in the same numbers as Mary's, only in reverse order. Their ages differ by just a fifth of Mary's. Jan is older. How old is Jan, and how many is Mary?
Final Answer:
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You need to know the following knowledge to solve this word math problem:
algebranumbersUnits of physical quantitiesGrade of the word problem
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