Three, someone buys 13 chicken eggs, 5 duck eggs, and 9 goose eggs, spending a total of 9.25 yuan; if they buy 2 chicken eggs, 4 duck eggs, and 3 goose eggs, they spend a total of 3.20 yuan. Try to find: how much would it cost to buy 1 chicken egg, 1 duck egg, and 1 goose egg each?
Three, Solution: Let the cost of 1 chicken egg be $x$ yuan, 1 duck egg be $y$ yuan, and 1 goose egg be $z$ yuan. According to the problem, we have
$$
\left\{\begin{array}{l}
13 x+5 y+9 z=9.25, \\
2 x+4 y+3 z=3.20 .
\end{array}\right.
$$

Solving, we get $x+y+z=1.05$.