Question
There were some beads in Bag A and Bag B. After David transferred 15 of the beads from Bag A to Bag B, the ratio of the number of beads in Bag A to that in Bag B changed to 2 : 5. Find the ratio of the numbers of beads in Bag A to the number of beads in Bag B at first.
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There were some beads in Bag A and Bag B. After David transferred 15 of the beads from Bag A to Bag B, the ratio of the number of beads in Bag A to that in Bag B changed to 2 : 5. Find the ratio of the numbers of beads in Bag A to the number of beads in Bag B at first.