Mathematics, 29.03.2021 17:00 vivi4924

In a school, all 200 fourth-graders play a musical instrument. Some students play the piano, some play the flute, some play both. If 80 students play the piano and 150 students play the flute, how many students play both the piano and the flute?

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In a school, all 200 fourth-graders play a musical instrument. Some students play the piano, some pl...

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