Question
Dylan had thrice as many erasers as Xuan. They had 68 erasers altogether. Dylan gave 50 erasers to Xuan. How many erasers did Xuan have in the end?
4 m

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Dylan had thrice as many erasers as Xuan. They had 68 erasers altogether. Dylan gave 50 erasers to Xuan. How many erasers did Xuan have in the end?