Ans: $\$5$
Let $\$x$ and $\$y$ be the price and a pear and an orange respectively.
Let $\$x$ and $\$y$ be the price and a pear and an orange respectively.
$\left\{ \begin{array}{ll}
7x+3y=47 & \ldots\unicode{x2460} \\
5x+6y=49 & \ldots \unicode{x2461}
\end{array}\right.$
$\unicode{x2460}\times 2 -\unicode{x2461}$,
$\begin{array}{rcl}
9x & = & 45 \\
x & = & 5
\end{array}$
Therefore, the price of a pear is $\$5$.
