Question
The ratio of the number of cookies to the number of tarts in a bakery was 3 : 4. After 5 cookies and 8 tarts were packed into each box, there were a total of 15 cookies and 12 tarts left. Find the total number of cookies and tarts in the bakery at first.
4 m

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The ratio of the number of cookies to the number of tarts in a bakery was 3 : 4. After 5 cookies and 8 tarts were packed into each box, there were a total of 15 cookies and 12 tarts left. Find the total number of cookies and tarts in the bakery at first.