Question
There were some stickers in Packet H and Packet J. After Bobby transferred 15 of the stickers from Packet H to Packet J, the ratio of the number of stickers in Packet H to that in Packet J changed to 2 : 5. Find the ratio of the numbers of stickers in Packet J to the number of stickers in Packet H at first.
3 m

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There were some stickers in Packet H and Packet J. After Bobby transferred 15 of the stickers from Packet H to Packet J, the ratio of the number of stickers in Packet H to that in Packet J changed to 2 : 5. Find the ratio of the numbers of stickers in Packet J to the number of stickers in Packet H at first.