If $(1, y)$ is the solution of the linear equation of two variables $2x + 3y = 8$,then $y = \ldots$

There are some students in the two examination halls $A$ and $B$. To make the number of students equal in each hall,$10$ students are sent from $A$ to $B$. But if $20$ students are sent from $B$ to $A$,the number of students in $A$ becomes double the number of students in $B$. Find the number of students in the two halls.

The pair of equations $2x + 3y = 5$ and $2x + 3y = 8$ is ..........

If $3x + 5y = 8$ and $5x + 3y = 24$,then $x - y = \ldots$

The solution set of $2x + 3y = 5$ and $4x + ky = 10$ is an infinite set. The value of $k$ is ...........

If $2x + y = 5$ and $y - 1 = 0$,then the value of $x$ is ............