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This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Historically, different people have defined a year in different ways. For example, an Egyptian year is 365 days long, a Julian year is 365$\frac14$ day...
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