Two buses start from opposite points on a straight main road that is $150\text{km}$ apart. The first bus runs for $25\text{km}$, takes a right turn, and runs for $15\text{km}$. It then turns left, runs for another $25\text{km}$, and then takes a turn to head back to reach the main road. In the meantime, due to a minor breakdown, the second bus has run only $35\text{km}$ along the main road. What is the distance between the two buses at this point?

Let the straight main road be represented along a horizontal axis from point $X$ ($0\text{km}$) to point $Y$ ($150\text{km}$).
* Total length of main road $=150\text{km}$.

**First Bus Path (starting from $X$ towards $Y$):**

1. Travels $25\text{km}$ along the main road. Horizontal position $=25\text{km}$.
2. Turns right and travels $15\text{km}$ away from the main road.
3. Turns left and travels $25\text{km}$ parallel to the main road.
4. Turns back towards the main road to reach it.
Upon returning to the main road, its horizontal distance covered along the main road is:

$${\text{Distance}}_1=25\text{km}+25\text{km}=50\text{km}\text{ from }X$$

**Second Bus Path (starting from $Y$ towards $X$):**

1. It travels straight along the main road for $35\text{km}$.
Its position measured from point $X$ is:

$${\text{Distance}}_2=150\text{km}-35\text{km}=115\text{km}\text{ from }X$$

Distance between the two buses:
Since both buses are now back on the straight main road, the direct distance between them is:

$$\text{Remaining Distance}=115\text{km}-50\text{km}=65\text{km}$$