The number of pages Cameron reads varies directly with time in minutes. He can read 15 pages in 60 minutes. What is the constant of proportionality for the number of minutes to read 1 page.
A. 2
B. -1/4
C. 4
D. -1/2
Let's denote the number of pages Cameron reads as P and the time in minutes as T. According to the problem, P varies directly with T, so we can write this as P = kT, where k is the constant of proportionality.
Now, we are given that Cameron can read 15 pages in 60 minutes. Using this information, we can set up the following equation: 15 = k * 60.
To find the constant of proportionality k, we can solve this equation for k: k = 15/60 = 1/4.
Therefore, the constant of proportionality for the number of minutes to read 1 page is 1/4.
Answer: B. -1/4.