5. Use two types of candies, A and B, to mix a variety of candy. If using 3 parts of candy A and 2 parts of candy B to mix the variety, it is 1.32 yuan more expensive per kilogram than using 2 parts of candy A and 3 parts of candy B. Then, 1 kilogram of candy A is \qquad yuan more expensive than 1 kilogram of candy B.
5. Solution: In the first method of mixing 1 kilogram of assorted candy, candy A accounts for $\frac{3}{5}$ kilogram, and candy B accounts for $\frac{2}{5}$ kilogram; in the second method of mixing 1 kilogram of assorted candy, candy A accounts for $\frac{2}{5}$ kilogram, and candy B accounts for $\frac{3}{5}$ kilogram, so $\frac{1}{5}$ kilogram of candy A is 1.32 yuan more expensive than $\frac{1}{5}$ kilogram of candy B. Therefore, 1 kilogram of candy A is more expensive than 1 kilogram of candy B by $1.32 \times 5=6.6$ (yuan).