2)
12 sections * x pages + 11 pages must be less than 100 and a multiple of 5 + 1
12(x) + 11 < 100 11 is already a multiple of 5 + 1
so we need 12x to be a multiple of 5 60 will work nicely so x = 5 (the next multiple of 5 would be 120....too big)
12(5) + 11 = 71 pages (assuming 2nd to last page = next to last page)