【Solution】Solution: Since, $\triangle=O+O+O$, therefore, $\triangle=3 O$,

Substitute $\triangle=3 \bigcirc$ into $\triangle+O=40$,
$$
3 O+O=40,
$$

which means $4 \bigcirc=40$,
$$
\begin{array}{l}
O=10, \\
\triangle=3 O=3 \times 10=30 ;
\end{array}
$$

Therefore, the answers are: $10 ; 30$.
1. (6 points) $\triangle=\bigcirc+\bigcirc+\bigcirc, \triangle+\bigcirc=40$, then $\bigcirc=$ $\qquad$ , $\triangle=$ $\qquad$