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?

Question

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
1/2. 15
1. 30
1 1/2. 45
2. 60

(1 point)
O (2. 60)
© (1, 30)
0 (½, 15)
O (15, 30)

Answer 1

In this table, the time is increasing by 1/2 hour each time, and the number of pages read is increasing by 15 each time. This means that for every additional 1/2 hour of reading, Ruth is able to read an additional 15 pages. This ratio can be represented as 1 hour : 30 pages.

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?

The correct answer is © (1, 30).