Arve's grandfather was 5 times older to her 9 years ago.

He would be 2 times of her age 18 years from now.

12 years ago, what was the ratio of Arve's age to that of her grandfather's age?

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Arve's grandfather was 5 times older to her 9 years ago.

He would be 2 times of her age 18 years from now.

12 years ago, what was the ratio of Arve's age to that of her grandfather's age?

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