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?
(1 point)
Responses
(2, 60)
(2, 60)
(1, 30)
(1, 30)
(1/2, 15)
(1/2, 15)
(15, 30)
The correct answer is (1/2, 15).
The unit rate is the rate at which Ruth can read 1 page. From the given data, we can calculate that she can read 15 pages in 30 minutes. This means that her unit rate is 1 page per 2 minutes.
Therefore, the ratio at which the unit rate is represented is (1/2, 15).