Question
There were some marbles in Box U and Box V. After Zeph transferred 15 of the marbles from Box U to Box V, the ratio of the number of marbles in Box U to that in Box V changed to 3 : 5. Find the ratio of the numbers of marbles in Box U to the number of marbles in Box V at first.
3 m

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There were some marbles in Box U and Box V. After Zeph transferred 15 of the marbles from Box U to Box V, the ratio of the number of marbles in Box U to that in Box V changed to 3 : 5. Find the ratio of the numbers of marbles in Box U to the number of marbles in Box V at first.