Simplify the left-hand side of the equation sqrt(3)+sqrt(5)sqrt(5).

We can split the fraction into two terms:

$$\frac{\sqrt{3}+\sqrt{5}}{\sqrt{5}} = \frac{\sqrt{3}}{\sqrt{5}} + \frac{\sqrt{5}}{\sqrt{5}}$$ $$= \frac{\sqrt{3}}{\sqrt{5}} + 1$$

Multiply the numerator and the denominator by $\sqrt{5}$:

$$\frac{\sqrt{3}}{\sqrt{5}} \times \frac{\sqrt{5}}{\sqrt{5}} = \frac{\sqrt{3 \times 5}}{5} = \frac{\sqrt{15}}{5}$$

$$\frac{\sqrt{15}}{5} + 1$$

Rearrange the terms to match the form $x + y\sqrt{15}$:

$$1 + \frac{1}{5}\sqrt{15}$$

$$1 + \frac{1}{5}\sqrt{15} = x + y\sqrt{15}$$

By comparing the constant terms and the coefficients of $\sqrt{15}$, we can identify $x$ and $y$:

$$x = 1$$ $$y = \frac{1}{5}$$

$$x+y = 1 + \frac{1}{5}$$

To add these, find a common denominator:

$$x+y = \frac{5}{5} + \frac{1}{5} = \frac{5+1}{5} = \frac{6}{5}$$

Convert the improper fraction to a mixed number:

$$\frac{6}{5} = 1\frac{1}{5}$$

Comparing this result with the given options:
A. $1\frac{3}{5}$
B. $1\frac{2}{5}$
C. $1\frac{1}{5}$
D. $\frac{1}{5}$

The correct option is C.

The final answer is $\boxed{\text{C. } 1\frac{1}{5}}$.