Question
There were some marbles in Bag A and Bag B. After Harry transferred 13 of the marbles from Bag A to Bag B, the ratio of the number of marbles in Bag A to that in Bag B changed to 3 : 5. Find the ratio of the numbers of marbles in Bag B to the number of marbles in Bag A at first.
3 m

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There were some marbles in Bag A and Bag B. After Harry transferred 13 of the marbles from Bag A to Bag B, the ratio of the number of marbles in Bag A to that in Bag B changed to 3 : 5. Find the ratio of the numbers of marbles in Bag B to the number of marbles in Bag A at first.