The unit rate is the number of pages read per minute. From the data provided, Ruth reads 15 pages in 30 minutes. Therefore, the unit rate is 15 pages / 30 minutes = 1/2, or 0.5 pages per minute.
The ratio at which the unit rate is represented is 0.5 pages per minute.
Ruth can read 15 pages in 30 minutes. She decides to create a table to keep track of her progress. From the data provided, at what ratio is the unit rate (constant of proportionality) represented?
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