Question
There were some pens in Bag C and Bag D. After Luis transferred 23 of the pens from Bag C to Bag D, the ratio of the number of pens in Bag C to that in Bag D changed to 3 : 8. Find the ratio of the numbers of pens in Bag C to the number of pens in Bag D at first.
3 m

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There were some pens in Bag C and Bag D. After Luis transferred 23 of the pens from Bag C to Bag D, the ratio of the number of pens in Bag C to that in Bag D changed to 3 : 8. Find the ratio of the numbers of pens in Bag C to the number of pens in Bag D at first.