Final answer:
To determine who is farther along in the book after 3 days, we can calculate the page numbers for both Brandon and Aria and compare. After 3 days, Brandon is on page 40 while Aria is on page 28, making Brandon farther along.
Step-by-step explanation:
To determine who is farther along in the book after 3 days, we can calculate the page numbers for both Brandon and Aria. At the beginning of the month, Brandon was on page 28 and Aria was on page 4. Brandon reads 4 pages per day, so after 3 days, he would be on page 28 + (4 * 3) = 28 + 12 = 40. Aria reads 8 pages per day, so after 3 days, she would be on page 4 + (8 * 3) = 4 + 24 = 28.
From the calculations, we can see that after 3 days, Brandon is farther along in the book as he is on page 40 compared to Aria who is on page 28.