The volume of the 1st aquarium is= 12*13*14 = 2184 cubic inches. The volume of the 2nd aquarium is = 22*24*25 = 13200 cubic inches. Obviously, at the constant filling rate, the time to fill the volume is proportional to volume. THEREFORE, you can write this proportion = , where "t" is the unknown time filling 2nd aquarium. From the proportion, t = = = 30.22 minutes, or about 30 minutes and 13 seconds.