The reading rate for each of the students are 186.975, 225.0625, 209.94 and 189.64 pages per minute.
First of all, we would determine the number of words in each page of this 325-page book as follows:
Number of words = 90,000/325
Number of words = 276.92 ≈ 277 words per page.
For Jamie's reading rate, we have:
Jamie = (277 × 81)/120
Jamie's reading rate = 186.975 pages per minute.
For Molly's reading rate, we have:
Molly = (277 × 65)/80
Molly's reading rate = 225.0625 pages per minute.
For Edgar's reading rate, we have:
Edgar = (277 × 72)/95
Edgar's reading rate = 209.94 pages per minute.
For Tyrone's reading rate, we have:
Tyrone = (277 × 89)/130
Tyrone's reading rate = 189.64 pages per minute.
Read more on reading rate here: https://brainly.com/question/21816489
#SPJ1