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?
time (hours) - pages read
1 over 2 - 15
1 - 30
1 and 1 over 2 - 45
2 - 60
options:
(2, 60)
(1, 30)
(1 over 2, 15)
(15, 30)