Mathematics, 23.02.2022 06:00, aderahd7352

Cora watched 30 movies for a combined total of 55 hours over her last summer break. Some of the movies were 1.5 hours long, and others were 2.5 hours long. How many of Cora's movies were 2.5 hours long?

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Cora watched 30 movies for a combined total of 55 hours over her last summer break. Some of the movi...