if the base is 8 inches then your left with 120 and a triangle is seperated in 3 differnt parts so the 8 inches are already taken by the base so 120/2=60
we know the blue and white paints are on a 1.5 : 5 ratio, thus, if we have a total of 16.25 gallons of paint to be split along that ratio, we can simply divide 16.25 by (1.5+5) and distribute accordingly.