Ali’s project on the greenhouse effect comprised 7 3/5
pages. Eva’s study on this particular subject had 1 1/2
times as many pages as Al1’s. How many pages did Eva write?
To find the number of pages that Eva wrote, we need to multiply the number of pages that Ali wrote by 1 1/2.
1 1/2 is equal to 3/2.
So Eva wrote 7 3/5 * 3/2 pages = 37/5 * 3/2 pages = <<37/5*3/2=55.5>>55.5/2 = <<55.5/2=27.75>>27.75 pages. Answer: \boxed{27.75}.