Question
There were some pencils in Packet Q and Packet R. After Flynn transferred 13 of the pencils from Packet Q to Packet R, the ratio of the number of pencils in Packet Q to that in Packet R changed to 3 : 5. Find the ratio of the numbers of pencils in Packet R to the number of pencils in Packet Q at first.
3 m

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There were some pencils in Packet Q and Packet R. After Flynn transferred 13 of the pencils from Packet Q to Packet R, the ratio of the number of pencils in Packet Q to that in Packet R changed to 3 : 5. Find the ratio of the numbers of pencils in Packet R to the number of pencils in Packet Q at first.