Question
There were some buttons in Bag L and Bag M. After Ivan transferred 35 of the buttons from Bag L to Bag M, the ratio of the number of buttons in Bag L to that in Bag M changed to 3 : 8. Find the ratio of the numbers of buttons in Bag M to the number of buttons in Bag L at first.
3 m

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There were some buttons in Bag L and Bag M. After Ivan transferred 35 of the buttons from Bag L to Bag M, the ratio of the number of buttons in Bag L to that in Bag M changed to 3 : 8. Find the ratio of the numbers of buttons in Bag M to the number of buttons in Bag L at first.