Mathematics, 30.10.2020 20:00, milkshakegrande101

28 There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh graders, and the rest are eighth graders. How many band members are seventh graders?

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28 There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh graders,...