Question
There were some pens in Box P and Box Q. After Tommy transferred 15 of the pens from Box P to Box Q, the ratio of the number of pens in Box P to that in Box Q changed to 1 : 5. Find the ratio of the numbers of pens in Box Q to the number of pens in Box P at first.
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There were some pens in Box P and Box Q. After Tommy transferred 15 of the pens from Box P to Box Q, the ratio of the number of pens in Box P to that in Box Q changed to 1 : 5. Find the ratio of the numbers of pens in Box Q to the number of pens in Box P at first.