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Mathematics, 09.10.2019 18:30 granniejo

On monday, tuesday, and wednesday, stephen practiced the piano from 4: 15 p. m. until 5: 45 p. m. in total, how long did he practice during those three days?

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On monday, tuesday, and wednesday, stephen practiced the piano from 4: 15 p. m. until 5: 45 p. m. in...
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