4 pages Elena = 5 pages Jada
To figure out how many pages Jada reads if Elena reads 1, divide 5 by 4: 1.25. This means that for every 1 page Elena reads, Jada reads 1.25 pages.
So if Elena reads 9 pages, multiply 1.25 by 9: 11.25 pages that Jada reads.
For S pages read by Elena, this is a variable, so I’m assuming it means for every S pages, Jada reads 1.25S
