Question
The age of Julian is 47 of Japheth's age. 10 years later, the ratio of Julian's age to Japheth's age is 3 : 4. How old is Japheth at first?
2 m

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The age of Julian is 47 of Japheth's age. 10 years later, the ratio of Julian's age to Japheth's age is 3 : 4. How old is Japheth at first?