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 constant proportionality?

Answer 1

The constant proportionality is the ratio between the number of pages read and the amount of time it takes to read those pages.

In this case, Ruth can read 15 pages in 30 minutes. The ratio between these two quantities is:

15 pages / 30 minutes = 1/2 pages per minute

Therefore, the constant proportionality is 1/2 pages per minute.