Question 11

Explanation

The relationship between the speeds of vehicles $X$, $Y$, and $Z$ is given by:

Next, we calculate the speed of vehicle $Z$ ($V_Z$). It is known that $Z$ travels a distance of $40$ km in $2$ hours.

After finding $V_Z$, we can determine the speed of vehicle $Y$ ($V_Y$):

Thus, the distance vehicle $Y$ can travel in $3$ hours is:

So, vehicle $Y$ can travel a distance of $15$ km.