The answer is C
have a nice day!
3/5 of the album is full....leaving 2/5 pages that are not full. 2/5(30) = 60/5 = 12 pgs not full (12 remaining pages)
she wants to set aside 1/4 of the remaining pages...
1/4 of 12 = 1/4(12) = 12/4 = 3 pgs set aside for vacation
12 - 3 = 9 pgs...she can fill 9 pgs before the vacation
[(upper legth + lower length) x height] divided by 2
6/10 and 13/20, sorry i would explain this but its late, cheers.
Hope this Helps.
