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 of proportionality?

Question

1. (15, 1/2)
2. (1, 30)
3. (2, 60)
4. (1 1/2, 30)

Answer 1

To find the ratio of the constant of proportionality, we need to determine how the number of pages read relates to the amount of time it takes.

Given that Ruth can read 15 pages in 30 minutes, we can set up the ratio as 15 pages to 30 minutes:
15/30 = 1/2

Therefore, the ratio of the constant of proportionality is (15, 1/2) or option 1.