At Deluxe paint store, Fuchsia paint is made by mixing 5 parts of red paint with 3 parts of blue paint. Mauve paint is made by mixing 3 parts of red paint with 5 parts blue paint. How many liters of blue paint must be added to 40 liters of Fuchsia to change it to Mauve paint?	Choices:
A) 9
B) 12
C) 15
D) 16
E) 26.6

Rationale: "in 40 liters , red = 5 / 8 * 40 = 25 and blue = 15 so , 25 / ( 15 + x ) = 3 / 5 or , x = 26.6 ( answer e )"
Answer: E