Question
Anna and Penelope had an equal number of erasers at first. After Anna gave 4 erasers to Penelope, Penelope had 25 erasers. How many erasers does Anna have in the end?
4 m

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Anna and Penelope had an equal number of erasers at first. After Anna gave 4 erasers to Penelope, Penelope had 25 erasers. How many erasers does Anna have in the end?