This is probably directly proportional disregarding other factors such as eyestrain, fires, and apocalypses. 4:6 treat as fraction 4/6=2/3 how long to read 6 6/x=2/3 multiply 2/3 by 3/3 since 2 times 3=6 6/x=6/8 x=8
60X6=360 seconds, 360 divided by 4= 90, James takes 90 seconds to read one page. 90X6=540, 540divided by 60 is 9. James takes 9 minutes to read 6 pages.