Xiaoli and Xiaohua each have several storybooks. If Xiaoli gives Xiaohua five, the number of them is equal; if Xiaohua gives Xiaoli four, then Xiaoli's story Xiaoli and Xiaohua each have several storybooks. If Xiaoli gives Xiaohua five, the number of them is equal. If Xiaohua gives Xiaoli four, the number of Xiaoli's storybooks is just three times that of Xiaohua. How many storybooks did Xiaoli and Xiaohua have?

Xiaoli and Xiaohua each have several storybooks. If Xiaoli gives Xiaohua five, the number of them is equal; if Xiaohua gives Xiaoli four, then Xiaoli's story Xiaoli and Xiaohua each have several storybooks. If Xiaoli gives Xiaohua five, the number of them is equal. If Xiaohua gives Xiaoli four, the number of Xiaoli's storybooks is just three times that of Xiaohua. How many storybooks did Xiaoli and Xiaohua have?

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Xiaoli is more than Xiaohua: 5 × 2 = 10
Xiaohua originally had books: (10 + 4 × 2) / (3-1) + 4 = 13 (copies)
Xiaoli's original income: 10 + 13 = 23

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