Xiaoming's father sets out from home to go shopping at the supermarket. If he rides a bicycle for 12 minutes first, then walks for 20 minutes, he can reach the supermarket; if he rides a bicycle for 8 minutes first, then walks for 36 minutes, he can also reach the supermarket. Then, if he rides a bicycle for 2 minutes first, then walks for $\qquad$ minutes, he can also reach the supermarket.
【Analysis and Solution】Travel problem, set but not solve. Let the speed of cycling be $x$ meters/minute, and the speed of walking be $y$ meters/minute; $12 x+20 y$
$$
\begin{array}{c}
=8 x+36 y ； \\
x=4 y ；
\end{array}
$$

Let $y$ be 1 unit, then $x$ is 4 units; the distance from home to the supermarket is $12 \times 4+20 \times 1=68$ or $8 \times 4+36 \times 1=68$ units; if cycling for 2 minutes first, then walking $(68-4 \times 2) \div 1=60$ minutes can also reach the supermarket.