Question 27
Given that
$$
\begin{aligned}
a+b & =23 \\
b+c & =25 \\
c+a & =30
\end{aligned}
$$
determine (with proof) the value of $a b c$.
$$
\begin{aligned}
a+b & =23 \\
b+c & =25 \\
c+a & =30
\end{aligned}
$$
determine (with proof) the value of $a b c$.